diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8e3210fc9..26b6a9d2b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,7 +30,7 @@ jobs:
         cd ..
         git clone https://github.com/metafacture/metafacture-fix.git
         cd metafacture-fix
-        git checkout 1.1.2
+        git checkout 1.2.0
         ./gradlew publishToMavenLocal
         cd -
     - name: Build with Maven
diff --git a/pom.xml b/pom.xml
index 2c1eff2fc..d00465cbe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,17 +15,17 @@
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-io</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-files</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-json</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
             <exclusions>
                 <exclusion>
                     <groupId>commons-logging</groupId>
@@ -40,72 +40,72 @@
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-biblio</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-formeta</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-monitoring</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-strings</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-formatting</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-elasticsearch</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-csv</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-flowcontrol</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metamorph</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-plumbing</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metamorph-test</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-xml</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafacture-mangling</artifactId>
-            <version>6.1.2</version>
+            <version>6.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.metafacture</groupId>
             <artifactId>metafix</artifactId>
-            <version>1.1.2</version>
+            <version>1.2.0</version>
             <exclusions>
                 <exclusion>
                     <groupId>log4j</groupId>
diff --git a/src/main/resources/alma/alma.fix b/src/main/resources/alma/alma.fix
index 79394bc33..0451bcf57 100644
--- a/src/main/resources/alma/alma.fix
+++ b/src/main/resources/alma/alma.fix
@@ -25,8 +25,8 @@ add_field("@context","http://lobid.org/resources/context.jsonld")
 
 # Set empty elements to manipulate the order winthin the record.
 add_field("id","")
-set_array("type[]")
-set_array("medium[]")
+add_array("type[]")
+add_array("medium[]")
 add_field("title","")
 
 do list(path:"880??","var":"$i")
@@ -38,7 +38,7 @@ do list(path:"880??","var":"$i")
   replace_all("$i.@script.label","(\\d{3}-\\d{2})/(.*)","$2")
   lookup("$i.@script.label","ISO15924-to-script")
 end
-set_array("alternateGraphicRepresentation[]")
+add_array("alternateGraphicRepresentation[]")
 
 include ("./fix/identifiers.fix")
 include ("./fix/titleRelatedFields.fix")
diff --git a/src/main/resources/alma/fix/contribution.fix b/src/main/resources/alma/fix/contribution.fix
index 75aba401e..c76a39927 100644
--- a/src/main/resources/alma/fix/contribution.fix
+++ b/src/main/resources/alma/fix/contribution.fix
@@ -1,9 +1,9 @@
 
 # 245 - Title Statement (NR) - Subfield: $c (NR)
-set_array("responsibilityStatement[]")
+add_array("responsibilityStatement[]")
 copy_field("245??.c", "responsibilityStatement[].$append")
 
-set_array("contribution[]")
+add_array("contribution[]")
 
 # 100 and 700
 
@@ -31,7 +31,7 @@ do list(path:"100[01] ", "var":"$i")
       end
     end
     do list(path: "$i.4", "var":"$j")
-      set_hash("contribution[].$append.agent")
+      add_hash("contribution[].$append.agent")
       do list(path:"$i.0","var":"$k")
         if all_match("$k", "^\\(DE-588\\).*$")
       # GND identifier
@@ -58,7 +58,7 @@ do list(path:"100[01] ", "var":"$i")
       call_macro("gndPersonCombinedLabel",field:"$i")
       copy_field("$i.@combinedLabel","contribution[].$last.agent.label")
       # type
-      set_array("contribution[].$last.agent.type[]","Person")
+      add_array("contribution[].$last.agent.type[]","Person")
       # role
       copy_field("$j","contribution[].$last.role.id")
       # dateOfBirthAndDeath #will be split on a later stage
@@ -83,7 +83,7 @@ do list(path:"700[01] ", "var":"$i")
       add_field("$i.4","ctb")
     end
     do list(path: "$i.4", "var":"$j")
-      set_hash("contribution[].$append.agent")
+      add_hash("contribution[].$append.agent")
       do list(path:"$i.0","var":"$k")
         if all_match("$k", "^\\(DE-588\\).*$")
       # GND identifier
@@ -110,7 +110,7 @@ do list(path:"700[01] ", "var":"$i")
       call_macro("gndPersonCombinedLabel",field:"$i")
       copy_field("$i.@combinedLabel","contribution[].$last.agent.label")
       # type
-      set_array("contribution[].$last.agent.type[]","Person")
+      add_array("contribution[].$last.agent.type[]","Person")
       # role
       copy_field("$j","contribution[].$last.role.id")
       # dateOfBirthAndDeath #will be split on a later stage
@@ -145,7 +145,7 @@ do list(path:"110[012] ", "var":"$i")
       end
     end
     do list(path: "$i.4", "var":"$j")
-      set_hash("contribution[].$append.agent")
+      add_hash("contribution[].$append.agent")
       do list(path:"$i.0","var":"$k")
         if all_match("$k", "^\\(DE-588\\).*$")
       # GND identifier
@@ -172,7 +172,7 @@ do list(path:"110[012] ", "var":"$i")
         call_macro("gndOtherCombinedLabel",field:"$i")
         copy_field("$i.@combinedLabel", "contribution[].$last.agent.label")
       # type
-      set_array("contribution[].$last.agent.type[]","CorporateBody")
+      add_array("contribution[].$last.agent.type[]","CorporateBody")
       # role
       copy_field("$j","contribution[].$last.role.id")
       call_macro("alternateGraphicRepresationArrayOfObjects",targetArray:"contribution[]",targetField:".agent",variable:"$i")
@@ -194,7 +194,7 @@ do list(path:"710[012] ", "var":"$i")
       add_field("$i.4","ctb")
     end
     do list(path: "$i.4", "var":"$j")
-      set_hash("contribution[].$append.agent")
+      add_hash("contribution[].$append.agent")
       do list(path:"$i.0","var":"$k")
         if all_match("$k", "^\\(DE-588\\).*$")
       # GND identifier
@@ -221,7 +221,7 @@ do list(path:"710[012] ", "var":"$i")
         call_macro("gndOtherCombinedLabel",field:"$i")
         copy_field("$i.@combinedLabel", "contribution[].$last.agent.label")
       # type
-      set_array("contribution[].$last.agent.type[]","CorporateBody")
+      add_array("contribution[].$last.agent.type[]","CorporateBody")
       # role
       copy_field("$j","contribution[].$last.role.id")
       call_macro("alternateGraphicRepresationArrayOfObjects",targetArray:"contribution[]",targetField:".agent",variable:"$i")
@@ -242,7 +242,7 @@ do list(path:"111[012] |711[012] ", "var":"$i")
       add_field("$i.4","oth")
     end
     do list(path: "$i.4", "var":"$j")
-      set_hash("contribution[].$append.agent")
+      add_hash("contribution[].$append.agent")
       do list(path:"$i.0","var":"$k")
         if all_match("$k", "^\\(DE-588\\).*$")
       # GND identifier
@@ -269,7 +269,7 @@ do list(path:"111[012] |711[012] ", "var":"$i")
       call_macro("gndEventCombinedLabel",field:"$i")
       copy_field("$i.@combinedLabel", "contribution[].$last.agent.label")
       # type
-      set_array("contribution[].$last.agent.type[]","ConferenceOrEvent")
+      add_array("contribution[].$last.agent.type[]","ConferenceOrEvent")
       # role
       copy_field("$j","contribution[].$last.role.id")
       call_macro("alternateGraphicRepresationArrayOfObjects",targetArray:"contribution[]",targetField:".agent",variable:"$i")
@@ -278,7 +278,7 @@ do list(path:"111[012] |711[012] ", "var":"$i")
 end
 
 
-set_array("contribution[].*.type[]", "Contribution")
+add_array("contribution[].*.type[]", "Contribution")
 replace_all("contribution[].*.agent.id","^\\(DE-588\\)(.*$)","https://d-nb.info/gnd/$1")
 replace_all("contribution[].*.agent.gndIdentifier","^\\(DE-588\\)(.*$)","$1")
 replace_all("contribution[].*.agent.label","(?<!\\p{Upper})\\.$|[,]$","")
@@ -340,7 +340,7 @@ do list (path: "contribution[]", "var": "$i")
   end
 
   # compare GND identifier (idn) with ALMA GND enrichment elements:
-  set_array("$i.agent.altLabel[]")
+  add_array("$i.agent.altLabel[]")
   do list(path:"GPN??", "var": "$z")
     if in ("$i.agent.@gndIdn", "$z.B") # Person labels have no character between $a (Name) and $b (Number).
       call_macro("gndPersonCombinedLabel",field:"$z")
@@ -365,7 +365,7 @@ do list (path: "contribution[]", "var": "$i")
   end
 
   # orcid
-  set_array("$i.agent.sameAs[]")
+  add_array("$i.agent.sameAs[]")
   do list(path:"GSI??", "var": "$z")
     if in ("$i.agent.@gndIdn", "$z.B")
       if any_equal("$z.2","orcid")
diff --git a/src/main/resources/alma/fix/describedBy.fix b/src/main/resources/alma/fix/describedBy.fix
index 6a3ef12f0..197e9205a 100644
--- a/src/main/resources/alma/fix/describedBy.fix
+++ b/src/main/resources/alma/fix/describedBy.fix
@@ -5,14 +5,14 @@ prepend("describedBy.id", "http://lobid.org/resources/")
 copy_field("almaMmsId", "describedBy.label")
 prepend("describedBy.label", "Webseite der hbz-Ressource ")
 
-set_array("describedBy.type[]", "BibliographicDescription")
+add_array("describedBy.type[]", "BibliographicDescription")
 
 
 add_field("describedBy.inDataset.id","http://lobid.org/resources/dataset#!")
 
 add_field("describedBy.inDataset.label","lobid-resources – Der hbz-Verbundkatalog als Linked Open Data")
 
-set_array("describedBy.resultOf.type[]", "CreateAction")
+add_array("describedBy.resultOf.type[]", "CreateAction")
 
 add_field("@createTime","$[createEndTime]")
 if all_match("@createTime","0")
@@ -24,7 +24,7 @@ end
 
 add_field("describedBy.resultOf.instrument.id","https://github.com/hbz/lobid-resources")
 
-set_array("describedBy.resultOf.instrument.type[]", "SoftwareApplication")
+add_array("describedBy.resultOf.instrument.type[]", "SoftwareApplication")
 
 add_field("describedBy.resultOf.instrument.label","Software lobid-resources")
 
@@ -67,7 +67,7 @@ replace_all("describedBy.resultOf.object.dateModified","^(\\d{4})(\\d{2})(\\d{2}
 replace_all("describedBy.resultOf.object.dateCreated","^(\\d{4})$","$1-01-01")
 replace_all("describedBy.resultOf.object.dateModified","^(\\d{4})$","$1-01-01")
 
-set_array("describedBy.resultOf.object.type[]", "DataFeedItem")
+add_array("describedBy.resultOf.object.type[]", "DataFeedItem")
 
 copy_field("almaMmsId","describedBy.resultOf.object.label")
 prepend("describedBy.resultOf.object.label","hbz-Ressource ")
@@ -77,7 +77,7 @@ add_field("describedBy.resultOf.object.inDataset.id", "https://datahub.io/datase
 
 add_field("describedBy.resultOf.object.inDataset.label", "hbz_unioncatalog")
 
-set_array("describedBy.license[]")
+add_array("describedBy.license[]")
 add_field("describedBy.license[].$append.id","http://creativecommons.org/publicdomain/zero/1.0" )
 add_field("describedBy.license[].$last.label","Creative Commons-Lizenz CC0 1.0 Universal" )
 
@@ -100,7 +100,7 @@ do list(path: "040  ", "var":"$i")
     end
   end
 
-set_array("describedBy.resultOf.object.modifiedBy[]")
+add_array("describedBy.resultOf.object.modifiedBy[]")
   do list(path:"$i.d", "var":"$j")
     copy_field("$j", "describedBy.resultOf.object.modifiedBy[].$append.id")
   end
diff --git a/src/main/resources/alma/fix/identifiers.fix b/src/main/resources/alma/fix/identifiers.fix
index da0317438..8787f2a1c 100644
--- a/src/main/resources/alma/fix/identifiers.fix
+++ b/src/main/resources/alma/fix/identifiers.fix
@@ -6,7 +6,7 @@ paste("id", "~http://lobid.org/resources/", "001", "~#!", join_char: "")
 # 024 - Other Standard Identifier (R) Subfield: $a (NR) $2 (NR)
 # urn
 
-set_array("urn[]")
+add_array("urn[]")
 
 do list(path: "0247?", "var": "$i")
   if any_equal("$i.2","urn")
@@ -17,7 +17,7 @@ end
 # Sometimes urn are not set in 024 then we could pick up the missing from 856.
 # 856 - Electronic Location and Access (R) - Subfield: $u (R) $3 (NR)
 # 1. Indicator: 4 = HTTP
-set_array("@urnLinks")
+add_array("@urnLinks")
 
 do list(path:"856??", "var":"$i")
   if all_match("$i.u", "^http.*(urn=|\\.(org|de)/)urn:.+$") # This should ignore repository links like: https://sammlungen.ulb.uni-muenster.de/urn/urn:nbn:de:hbz:6-85659520092
@@ -50,8 +50,8 @@ end
 # 020 - International Standard Book Number (R) - $a (NR)
 # source data sometimes provides repeated subfield $a even if this is not valid marc
 
-set_array("@isbn[]")
-set_array("isbn[]")
+add_array("@isbn[]")
+add_array("isbn[]")
 
 do list(path:"020  ", "var": "$i")
   do list(path:"$i.a", "var": "$j")
@@ -74,7 +74,7 @@ uniq("isbn[]")
 
 
 # 022 - International Standard Serial Number (R) - Subfield $a (NR)
-set_array("issn[]")
+add_array("issn[]")
 do list(path:"022? ", "var":"$i")
   copy_field("$i.a", "issn[].$append")
 end
@@ -82,7 +82,7 @@ replace_all("issn[].*", "-","")
 uniq("issn[]")
 
 # 024 - Other Standard Identifier (R) - Subfield a (NR) 1. Indicator 2 = ISMN
-set_array("ismn[]")
+add_array("ismn[]")
 do list(path:"0242?", "var":"$i")
   copy_field("$i.a", "ismn[].$append")
 end
@@ -90,7 +90,7 @@ replace_all("ismn[].*", "-","")
 
 
 # 024 (R) Subfield a (NR) 1. Indicator 7 = to defined Identifier
-set_array("doi[]")
+add_array("doi[]")
 do list(path:"0247?", "var":"$i")
   if all_equal("$i.2","doi")
     copy_field("$i.a", "doi[].$append")
@@ -109,7 +109,7 @@ replace_all("doi[].*", ".*doi.org.*(10\\.(\\d)+/(\\S)+).*", "$1")
 uniq("doi[]")
 
 # 035 - System Control Number (R) - Subfield: $a (NR)
-set_array("oclcNumber[]")
+add_array("oclcNumber[]")
 
 do list(path:"035  ", "var":"$i")
     if all_match("$i.a", "\\(OCoLC\\)(.*)")
@@ -151,7 +151,7 @@ copy_field("almaMmsId","rpbId")
 lookup("rpbId","almaMmsId2rpbId",delete:"true")
 replace_all("rpbId", "^RPB","")
 
-set_array("stockNumber[]")
+add_array("stockNumber[]")
 do list(path:"028??", "var":"$i")
   copy_field("$i.a", "stockNumber[].$append")
 end
diff --git a/src/main/resources/alma/fix/item.fix b/src/main/resources/alma/fix/item.fix
index 8f39a3fb3..2470339be 100644
--- a/src/main/resources/alma/fix/item.fix
+++ b/src/main/resources/alma/fix/item.fix
@@ -1,11 +1,11 @@
-set_array("hasItem[]")
-set_array("@ITM-H") # Helper element for creating Holding from HOL ("PhysikalischerTitel")
+add_array("hasItem[]")
+add_array("@ITM-H") # Helper element for creating Holding from HOL ("PhysikalischerTitel")
 do list(path:"ITM  ", "var": "$i")
   call_macro("suppressedLocation", targetField: "$i", libraryCodeSubfield: "w", locationCodeSubfield: "x")
   unless exists("$i.suppressedLocation") # Test if location is suppressed with mapping provided by the libraries.
-    set_hash( "hasItem[].$append")
+    add_hash( "hasItem[].$append")
     add_field("hasItem[].$last.label", "lobid Bestandsressource")
-    set_array("hasItem[].$last.type[]", "Item","PhysicalObject")
+    add_array("hasItem[].$last.type[]", "Item","PhysicalObject")
     if exists("$i.z") # Temporary call number subfield
       copy_field("$i.z", "hasItem[].$last.callNumber")
     elsif exists("$i.n") # Item call number subfield
@@ -21,7 +21,7 @@ do list(path:"ITM  ", "var": "$i")
   end
 end
 
-set_array("@HOL-M_POR-M") # Helper element for creating Holding from MBD ("NurTitel")
+add_array("@HOL-M_POR-M") # Helper element for creating Holding from MBD ("NurTitel")
 do list(path: "HOL  ", "var": "$i")
   copy_field("$i.M","@HOL-M_POR-M.$append")
   unless in("$i.8", "@ITM-H") # Checks if there is no corresponding ITM-Field
@@ -30,9 +30,9 @@ do list(path: "HOL  ", "var": "$i")
         if exists("$H52.b")
           call_macro("suppressedLocation", targetField: "$H52", libraryCodeSubfield: "b", locationCodeSubfield: "c")
           unless exists("$H52.suppressedLocation") # Test if location is suppressed with mapping provided by the libraries.
-            set_hash( "hasItem[].$append")
+            add_hash( "hasItem[].$append")
             add_field("hasItem[].$last.label", "lobid Bestandsressource")
-            set_array("hasItem[].$last.type[]", "Item","PhysikalischerTitel")
+            add_array("hasItem[].$last.type[]", "Item","PhysikalischerTitel")
             if exists("$H52.b.1")
               copy_field("$H52.b.1","hasItem[].$last.currentLibrary")
             else
@@ -56,8 +56,8 @@ do list(path:"POR  ", "var": "$i")
   copy_field("$i.M","@HOL-M_POR-M.$append")
 # entity for every POR  .a without POR  .A
   unless any_match("$i.a",".*6441$") # filter out hbz
-    set_hash( "hasItem[].$append")
-    set_array("hasItem[].$last.type[]", "Item", "DigitalDocument")
+    add_hash( "hasItem[].$append")
+    add_array("hasItem[].$last.type[]", "Item", "DigitalDocument")
     add_field("hasItem[].$last.label", "Electronic Portfolio")
     copy_field("$i.D", "$i.@electronicLocator")
     replace_all("$i.@electronicLocator","https://eu04.alma.exlibrisgroup.com/view/uresolver/49HBZ_NETWORK","")
@@ -74,8 +74,8 @@ do list(path:"POR  ", "var": "$i")
     copy_field("$i.d", "$i.@sublocation")
     replace_all("$i.@sublocation","https://hbz-network.userservices.exlibrisgroup.com/view/uresolver/49HBZ_NETWORK","")
     do list(path:"$i.A", "var": "$j")
-      set_hash( "hasItem[].$append")
-      set_array("hasItem[].$last.type[]", "Item", "DigitalDocument")
+      add_hash( "hasItem[].$append")
+      add_array("hasItem[].$last.type[]", "Item", "DigitalDocument")
       add_field("hasItem[].$last.label", "Electronic Portfolio")
       paste("hasItem[].$last.electronicLocator", "~https://eu04.alma.exlibrisgroup.com/view/uresolver/","$j","$i.@electronicLocator", join_char: "")
       paste("hasItem[].$last.sublocation", "~https://hbz-network.userservices.exlibrisgroup.com/view/uresolver/","$j","$i.@sublocation", join_char: "")
@@ -85,7 +85,7 @@ do list(path:"POR  ", "var": "$i")
       copy_field("$i.@iz","hasItem[].$last.heldBy.isil")
       paste("hasItem[].$last.heldBy.id", "~http://lobid.org/organisations/", "hasItem[].$last.heldBy.isil", "~#!", join_char:"")
       copy_field("hasItem[].$last.heldBy.id", "hasItem[].$last.heldBy.label")
-      set_array("hasItem[].$last.inCollection[]")
+      add_array("hasItem[].$last.inCollection[]")
       paste("hasItem[].$last.inCollection[].$append.id", "~http://lobid.org/organisations/", "$i.@iz", "~#!", join_char:"")
       copy_field("hasItem[].$last.inCollection[].$last.id", "hasItem[].$last.inCollection[].$last.label")
       # item id is constructed "http://lobid.org/items/[almaMmsId of the record]:[isil of the Owner]:[almaMmsId of the holding]#!"
@@ -97,9 +97,9 @@ end
 do list(path: "MBD  ", "var": "$i")
   unless any_match("$i.M","49HBZ_NETWORK")
     unless in("$i.M", "@HOL-M_POR-M") # Checks if there is no corresponding HOL or POR-Field
-      set_hash( "hasItem[].$append")
+      add_hash( "hasItem[].$append")
       add_field("hasItem[].$last.label", "lobid Bestandsressource")
-      set_array("hasItem[].$last.type[]", "Item","NurTitel")
+      add_array("hasItem[].$last.type[]", "Item","NurTitel")
       copy_field("$i.i", "$i.@iz")
       replace_all("$i.@iz",".*(\\d{4})$","$1")
       lookup("$i.@iz", "alma-institution-code-to-isil")
@@ -107,7 +107,7 @@ do list(path: "MBD  ", "var": "$i")
       copy_field("$i.@iz","hasItem[].$last.heldBy.isil")
       paste("hasItem[].$last.heldBy.id", "~http://lobid.org/organisations/", "hasItem[].$last.heldBy.isil", "~#!", join_char:"")
       copy_field("hasItem[].$last.heldBy.id", "hasItem[].$last.heldBy.label")
-      set_array("hasItem[].$last.inCollection[]")
+      add_array("hasItem[].$last.inCollection[]")
       paste("hasItem[].$last.inCollection[].$append.id", "~http://lobid.org/organisations/", "$i.@iz", "~#!", join_char:"")
       copy_field("hasItem[].$last.inCollection[].$last.id", "hasItem[].$last.inCollection[].$last.label")
     # item id is constructed "http://lobid.org/items/[almaMmsId of the record]:[isil of the Owner]:[almaMmsId of the holding]#!"
diff --git a/src/main/resources/alma/fix/macros.fix b/src/main/resources/alma/fix/macros.fix
index d2422922a..d3b412cd7 100644
--- a/src/main/resources/alma/fix/macros.fix
+++ b/src/main/resources/alma/fix/macros.fix
@@ -8,7 +8,7 @@ do put_macro("alternateGraphicRepresationArrayOfObjects")
           do list(path:"alternateGraphicRepresentation[]","var":"$AGR")
             if in ("$880.@script.id","$AGR.script.id")
               unless exists("$AGR.record.$[targetArray]")
-                set_array("$AGR.record.$[targetArray]")
+                add_array("$AGR.record.$[targetArray]")
               end
               copy_field("$880.a","$AGR.record.$[targetArray].$append$[targetField].label")
             end
@@ -16,7 +16,7 @@ do put_macro("alternateGraphicRepresationArrayOfObjects")
         else
           copy_field("$880.@script.id","alternateGraphicRepresentation[].$append.script.id")
           copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
-          set_array("alternateGraphicRepresentation[].$last.record.$[targetArray]")
+          add_array("alternateGraphicRepresentation[].$last.record.$[targetArray]")
           copy_field("$880.a","alternateGraphicRepresentation[].$last.record.$[targetArray].$append$[targetField].label")
         end
       end
@@ -33,7 +33,7 @@ do put_macro("alternateGraphicRepresationArrayOfStrings")
           do list(path:"alternateGraphicRepresentation[]","var":"$AGR")
             if in ("$880.@script.id","$AGR.script.id")
               unless exists("$AGR.record.$[targetArray]")
-                set_array("$AGR.record.$[targetArray]")
+                add_array("$AGR.record.$[targetArray]")
               end
               copy_field("$880.a","$AGR.record.$[targetArray].$append")
             end
@@ -41,7 +41,7 @@ do put_macro("alternateGraphicRepresationArrayOfStrings")
         else
           copy_field("$880.@script.id","alternateGraphicRepresentation[].$append.script.id")
           copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
-          set_array("alternateGraphicRepresentation[].$last.record.$[targetArray]")
+          add_array("alternateGraphicRepresentation[].$last.record.$[targetArray]")
           copy_field("$880.a","alternateGraphicRepresentation[].$last.record.$[targetArray].$append")
         end
       end
@@ -58,9 +58,9 @@ do put_macro("alternateGraphicRepresationIsPartOf")
           do list(path:"alternateGraphicRepresentation[]","var":"$AGR")
             if in ("$880.@script.id","$AGR.script.id")
               unless exists("$AGR.record.isPartOf[]")
-                set_array("$AGR.record.isPartOf[]")
+                add_array("$AGR.record.isPartOf[]")
               end
-              set_array("$AGR.record.isPartOf[].$append.hasSuperordinate[]")
+              add_array("$AGR.record.isPartOf[].$append.hasSuperordinate[]")
               copy_field("$880.a","$AGR.record.isPartOf[].$last.hasSuperordinate[].$append.label")
               copy_field("$880.v", "$AGR.record.isPartOf[].$last.numbering")
             end
@@ -68,8 +68,8 @@ do put_macro("alternateGraphicRepresationIsPartOf")
         else
           copy_field("$880.@script.id","alternateGraphicRepresentation[].$append.script.id")
           copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
-          set_array("alternateGraphicRepresentation[].$last.record.isPartOf[]")
-          set_array("alternateGraphicRepresentation[].$last.record.isPartOf[].$append.hasSuperordinate[]")
+          add_array("alternateGraphicRepresentation[].$last.record.isPartOf[]")
+          add_array("alternateGraphicRepresentation[].$last.record.isPartOf[].$append.hasSuperordinate[]")
           copy_field("$880.a","alternateGraphicRepresentation[].$last.record.isPartOf[].$last.hasSuperordinate[].$append.label")
           copy_field("$880.v", "alternateGraphicRepresentation[].$last.record.isPartOf[].$last.numbering")
         end
@@ -83,7 +83,7 @@ do put_macro("rolesFromSubfieldE")
   if exists("$i.e")
     unless is_array("$i.4")
       move_field("$i.4","$i.@4")
-      set_array("$i.4")
+      add_array("$i.4")
       move_field("$i.@4","$i.4.$append")
     end
     do list(path:"$i.e","var":"$e")
@@ -171,11 +171,11 @@ end
 # Macro for combinedLabel Event / Meeting
 
 do put_macro("gndEventCombinedLabel")
-  set_array("$[field].@combinedLabel")  # check if GND concept has combined variant
+  add_array("$[field].@combinedLabel")  # check if GND concept has combined variant
   copy_field("$[field].a","$[field].@combinedLabel.$append")
   copy_field("$[field].b","$[field].@combinedLabel.$append")
   join_field("$[field].@combinedLabel", ". ") # This is the difference to gnd person
-  set_array("$[field].@combinedDetailsForEvents")
+  add_array("$[field].@combinedDetailsForEvents")
   copy_field("$[field].n","$[field].@combinedDetailsForEvents.$append")
   copy_field("$[field].g","$[field].@combinedDetailsForEvents.$append")
   copy_field("$[field].d","$[field].@combinedDetailsForEvents.$append")
@@ -192,7 +192,7 @@ end
 # Macro for combinedLabel Person
 
 do put_macro("gndPersonCombinedLabel")
-    set_array("$[field].@combinedLabel")  # check if GND concept has combined variant
+    add_array("$[field].@combinedLabel")  # check if GND concept has combined variant
     copy_field("$[field].a","$[field].@combinedLabel.$append")
     copy_field("$[field].b","$[field].@combinedLabel.$append")
     join_field("$[field].@combinedLabel", " ") # This is the difference to gnd non person
@@ -214,7 +214,7 @@ end
 # Macro for combinedLabel Non-Person and Non-Event
 
 do put_macro("gndOtherCombinedLabel")
-  set_array("$[field].@combinedLabel")  # check if GND concept has combined variant
+  add_array("$[field].@combinedLabel")  # check if GND concept has combined variant
   copy_field("$[field].a","$[field].@combinedLabel.$append")
   copy_field("$[field].p","$[field].@combinedLabel.$append")
   copy_field("$[field].b","$[field].@combinedLabel.$append")
@@ -333,7 +333,7 @@ do put_macro("holdingLibrary+opacLink")
   end
   paste("hasItem[].$last.heldBy.id", "~http://lobid.org/organisations/", "hasItem[].$last.heldBy.isil", "~#!", join_char:"")
   copy_field("hasItem[].$last.heldBy.id", "hasItem[].$last.heldBy.label")
-  set_array("hasItem[].$last.inCollection[]")
+  add_array("hasItem[].$last.inCollection[]")
   paste("hasItem[].$last.inCollection[].$append.id", "~http://lobid.org/organisations/", "$i.@iz", "~#!", join_char:"")
   copy_field("hasItem[].$last.inCollection[].$last.id", "hasItem[].$last.inCollection[].$last.label")
   # item id is constructed "http://lobid.org/items/[almaMmsId of the record]:[isil of the Owner]:[almaMmsId of the holding]#!"
@@ -365,7 +365,7 @@ do put_macro("opacLink")
 #    lookup("$i.@opacLinkIsbn","isil2opac_isbn", delete:"true")
 #    split_field("$i.@opacLinkZdbId","\\{isbn\\}")
 #  end
-  set_array("hasItem[].$last.seeAlso[]")
+  add_array("hasItem[].$last.seeAlso[]")
   if exists("$i.@opacLinkZdbId.1")
     paste("hasItem[].$last.seeAlso[].$append","$i.@opacLinkZdbId.1","zdbId","$i.@opacLinkZdbId.2",join_char:"")
   elsif exists("$i.@opacLinkHbzId.1")
@@ -383,11 +383,11 @@ end
 
 do put_macro("schlagwortfolge")
   if exists("$[field]")
-    set_array("subject[].$append.type[]","ComplexSubject")
-    set_array("subject[].$last.label")
-    set_array("subject[].$last.componentList[]")
+    add_array("subject[].$append.type[]","ComplexSubject")
+    add_array("subject[].$last.label")
+    add_array("subject[].$last.componentList[]")
     do list(path:"$[field]", "var":"$i")
-      set_array("subject[].$last.componentList[].$append.type[]")
+      add_array("subject[].$last.componentList[].$append.type[]")
       if exists("$i.t") # Marker for Werktitel/Work even when the GND-enrichment is falsly labeld as Peron or differently
         add_field("subject[].$last.componentList[].$last.type[].$append","Work")
       else
@@ -438,8 +438,8 @@ end
 
 
 do put_macro("subjectLabel")
-  set_array("subject[].$last.label")
-  set_array("$i.@name")
+  add_array("subject[].$last.label")
+  add_array("$i.@name")
   copy_field("$i.a","$i.@name.$append")
   copy_field("$i.b","$i.@name.$append")
   copy_field("$i.c","$i.@name.$append")
@@ -455,7 +455,7 @@ end
 
 do put_macro("publication")
   do list(path:"$[field]", "var":"$i")
-    set_hash( "publication[].$append")
+    add_hash( "publication[].$append")
     do list(path: "$i.c", "var":"$j")
       replace_all("$j", "\\[|\\]|ca. |c ", "")
       unless exists("publication[].$last.startDate")
@@ -469,10 +469,10 @@ do put_macro("publication")
         end
       end
     end
-    set_array("publication[].$last.type[]","PublicationEvent")
-    set_array("publication[].$last.location[]")
+    add_array("publication[].$last.type[]","PublicationEvent")
+    add_array("publication[].$last.location[]")
     copy_field("$i.a", "publication[].$last.location[].$append")
-    set_array("publication[].$last.publishedBy[]")
+    add_array("publication[].$last.publishedBy[]")
     copy_field("$i.b", "publication[].$last.publishedBy[].$append")
     if exists("$i.6")
       copy_field("$i.6","$i.linkageTest")
@@ -482,23 +482,23 @@ do put_macro("publication")
             do list(path:"alternateGraphicRepresentation[]","var":"$AGR")
               if in ("$880.@script.id","$AGR.script.id")
                 unless exists("$AGR.record.publication[]")
-                  set_array("$AGR.record.publication[]")
+                  add_array("$AGR.record.publication[]")
                 end
-                set_hash( "$AGR.record.publication[].$append")
-                set_array("$AGR.record.publication[].$last.location[]")
+                add_hash( "$AGR.record.publication[].$append")
+                add_array("$AGR.record.publication[].$last.location[]")
                 copy_field("$880.a", "$AGR.record.publication[].$last.location[].$append")
-                set_array("$AGR.record.publication[].$last.publishedBy[]")
+                add_array("$AGR.record.publication[].$last.publishedBy[]")
                 copy_field("$880.b", "$AGR.record.publication[].$last.publishedBy[].$append")
               end
             end
           else
             copy_field("$880.@script.id","alternateGraphicRepresentation[].$append.script.id")
             copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
-            set_array("alternateGraphicRepresentation[].$last.publication[]")
-            set_hash( "alternateGraphicRepresentation[].$last.publication[].$append")
-            set_array("alternateGraphicRepresentation[].$last.publication[].$last.location[]")
+            add_array("alternateGraphicRepresentation[].$last.publication[]")
+            add_hash( "alternateGraphicRepresentation[].$last.publication[].$append")
+            add_array("alternateGraphicRepresentation[].$last.publication[].$last.location[]")
             copy_field("$880.a", "alternateGraphicRepresentation[].$last.publication[].$last.location[].$append")
-            set_array("alternateGraphicRepresentation[].$last.publication[].$last.publishedBy[]")
+            add_array("alternateGraphicRepresentation[].$last.publication[].$last.publishedBy[]")
             copy_field("$880.b", "alternateGraphicRepresentation[].$last.publication[].$last.publishedBy[].$append")
           end
         end
@@ -509,7 +509,7 @@ end
 
 do put_macro("manufacture")
   do list(path:"$[field]", "var":"$i")
-    set_hash( "manufacture[].$append")
+    add_hash( "manufacture[].$append")
     do list(path: "$i.c", "var":"$j")
       replace_all("$j", "\\[|\\]|ca. |c ", "")
       unless exists("manufacture[].$last.startDate")
@@ -523,10 +523,10 @@ do put_macro("manufacture")
         end
       end
     end
-    set_array("manufacture[].$last.type[]","Event")
-    set_array("manufacture[].$last.location[]")
+    add_array("manufacture[].$last.type[]","Event")
+    add_array("manufacture[].$last.location[]")
     copy_field("$i.a", "manufacture[].$last.location[].$append")
-    set_array("manufacture[].$last.manufacturedBy[]")
+    add_array("manufacture[].$last.manufacturedBy[]")
     copy_field("$i.b", "manufacture[].$last.manufacturedBy[].$append")
     if exists("$i.6")
       copy_field("$i.6","$i.linkageTest")
@@ -536,23 +536,23 @@ do put_macro("manufacture")
             do list(path:"alternateGraphicRepresentation[]","var":"$AGR")
               if in ("$880.@script.id","$AGR.script.id")
                 unless exists("$AGR.record.manufacture[]")
-                  set_array("$AGR.record.manufacture[]")
+                  add_array("$AGR.record.manufacture[]")
                 end
-                set_hash( "$AGR.record.manufacture[].$append")
-                set_array("$AGR.record.manufacture[].$last.location[]")
+                add_hash( "$AGR.record.manufacture[].$append")
+                add_array("$AGR.record.manufacture[].$last.location[]")
                 copy_field("$880.a", "$AGR.record.manufacture[].$last.location[].$append")
-                set_array("$AGR.record.manufacture[].$last.manufacturedBy[]")
+                add_array("$AGR.record.manufacture[].$last.manufacturedBy[]")
                 copy_field("$880.b", "$AGR.record.manufacture[].$last.manufacturedBy[].$append")
               end
             end
           else
             copy_field("$880.@script.id","alternateGraphicRepresentation[].$append.script.id")
             copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
-            set_array("alternateGraphicRepresentation[].$last.manufacture[]")
-            set_hash( "alternateGraphicRepresentation[].$last.manufacture[].$append")
-            set_array("alternateGraphicRepresentation[].$last.manufacture[].$last.location[]")
+            add_array("alternateGraphicRepresentation[].$last.manufacture[]")
+            add_hash( "alternateGraphicRepresentation[].$last.manufacture[].$append")
+            add_array("alternateGraphicRepresentation[].$last.manufacture[].$last.location[]")
             copy_field("$880.a", "alternateGraphicRepresentation[].$last.manufacture[].$last.location[].$append")
-            set_array("alternateGraphicRepresentation[].$last.manufacture[].$last.publishedBy[]")
+            add_array("alternateGraphicRepresentation[].$last.manufacture[].$last.publishedBy[]")
             copy_field("$880.b", "alternateGraphicRepresentation[].$last.manufacture[].$last.publishedBy[].$append")
           end
         end
diff --git a/src/main/resources/alma/fix/mediumAndType.fix b/src/main/resources/alma/fix/mediumAndType.fix
index 7dc4b580f..6a4aa2ce2 100644
--- a/src/main/resources/alma/fix/mediumAndType.fix
+++ b/src/main/resources/alma/fix/mediumAndType.fix
@@ -1,4 +1,4 @@
-set_array("medium[]")
+add_array("medium[]")
 
 # The type and medium transformation has to be completly remodeled since the transformation was not identical with
 # the old ALEPH Moprh Transformation.
@@ -52,7 +52,7 @@ end
 paste("@leaderTyp+008","@leaderTyp","008", join_char:"")
 
 # Collects Portfolio resource types
-set_array("@PORtype")
+add_array("@PORtype")
 do list(path: "POR  ","var":"$i")
   copy_field("$i.f","@PORtype.$append")
 end
@@ -65,7 +65,7 @@ end
 
 # TODO: Check introx concerning possible mappings of 340 https://github.com/hbz/limetrans/blob/d2dff10e1b5cdf5699239a8f3474f8b652d582a3/src/main/resources/transformation/alma.fix#L629
 
-set_array("@300a_mainExtend")
+add_array("@300a_mainExtend")
 do list(path:"300  ", "var":"$i")
   do list(path:"$i.a", "var":"$j")
     copy_field("$j","@300a_mainExtend.$append") # All extent infos listed after : or ; are only refering to parts not the resource itself.
@@ -338,7 +338,7 @@ end
 # All metadata records have type: "BibliographicResource"
 # Base for type list is schema: https://github.com/hbz/lobid-resources/blob/eb1cbfaf013b03aee49291d8b3a4d00aa046e333/src/test/resources/schemas/type.json
 
-set_array("type[]","BibliographicResource")
+add_array("type[]","BibliographicResource")
 
 # There seems to be a discrepancy between the values in the schema enum and in the aggregation.
 # Real data: http://lobid.org/resources/search?format=json&aggregations=type
@@ -360,7 +360,7 @@ if any_equal("natureOfContent[].*.label","Website")
     end
   end
   # if type is ArchivedWebPage also add element `webPageArchived`
-  set_array("webPageArchived[]")
+  add_array("webPageArchived[]")
   do list(path: "856??", "var": "$i")
     unless any_contain("$i.u", "edoweb")
       copy_field("$i.u","webPageArchived[].$append.id")
diff --git a/src/main/resources/alma/fix/otherFields.fix b/src/main/resources/alma/fix/otherFields.fix
index 4350555c9..de90ad950 100644
--- a/src/main/resources/alma/fix/otherFields.fix
+++ b/src/main/resources/alma/fix/otherFields.fix
@@ -1,7 +1,7 @@
 # 008 - Fixed-Length Data Elements-General Information (NR) - No subfields
 # 041 - 041 - Language Code (R)
 
-set_array("@language")
+add_array("@language")
 copy_field("008", "@008-lang")
 substring("@008-lang", "35", "3")
 copy_field("@008-lang", "@language.$append.id")
@@ -13,7 +13,7 @@ end
 
 lookup("@language.*.label","ISO639-2-to-GND", delete:"true")
 
-set_array("language[]")
+add_array("language[]")
 do list(path:"@language", "var":"$i")
   unless any_match("$i.id","zxx|mul|sgn|und|.*[\\|\\#].*|\\s*")
     if exists("$i.label")
@@ -34,8 +34,8 @@ uniq("language[]")
 # 300 - Physical Description (R)
 # We reuse the introx transformation here.
 
-set_array("@300a")
-set_array("@300c")
+add_array("@300a")
+add_array("@300c")
 do list(path: "300  ", "var": "$i")
   copy_field("$i.a", "@300a.$append")
   do list(path: "$i.b", "var": "$j")
@@ -110,7 +110,7 @@ replace_all("extent", "  ", " ")
 
 
 # 500 - General Note (R) Subfield: $a (NR)
-set_array("note[]")
+add_array("note[]")
 do list(path:"500  ", "var": "$i")
   copy_field("$i.a", "note[].$append")
 end
@@ -125,13 +125,13 @@ end
 # 520 - Summary, Etc. (R) Subfield: $a (NR), $b (NR)
 # TODO: Check if 1. Indicator 1 (REVIEW) is really to count as abstract. Perhaps 2 (Scope and content) is a better fit.
 # TODO: Get testdata.
-set_array("abstract[]")
+add_array("abstract[]")
 do list(path:"520[ 23] ", "var": "$i")
   copy_field("$i.[ab]", "abstract[].$append")
 end
 
 # 502 - Dissertation Note (R) Subfield: $a (R)
-set_array("thesisInformation[]")
+add_array("thesisInformation[]")
 do list(path:"502  ", "var": "$i")
   copy_field("$i.a", "thesisInformation[].$append")
   paste("thesisInformation[].$append","$i.c","$i.b","$i.d","$i.o","$i.g", join_char:", ")
@@ -143,7 +143,7 @@ end
 # Also the element bibliographicCitation is confusing since it has a broader concept than the scope in lobid: only bibliographicInfo about issues/collection that an article belongs to.
 # Do we need a filter only for articles?
 
-set_array("bibliographicCitation")
+add_array("bibliographicCitation")
 
 
 # 773 - Host Item Entry (R) - $t - Title (NR), $b - Edition (NR), $d - Place, publisher, and date of publication (NR), $g - Related parts (R), $n - Note (R)
@@ -178,7 +178,7 @@ join_field("bibliographicCitation", "; ")
 
 # 542 - Information Relating to Copyright Status (R) - $n - Note (R)  $u - Uniform Resource Identifier (R)
 
-set_array("license[]")
+add_array("license[]")
 do list(path: "540??|542??", "var": "$i")
   copy_field("$i.u", "license[].$append.id")
   replace_all("license[].$last.id", "^(http://|https://)(.*)$","https://$2")
@@ -188,9 +188,9 @@ end
 
 uniq("license[]")
 
-set_array("langNote[]")
+add_array("langNote[]")
 do list(path: "546??", "var": "$i")
-  set_array("$i.@langNote")
+  add_array("$i.@langNote")
   copy_field("$i.a", "$i.@langNote.$append")
   copy_field("$i.b", "$i.@langNote.$append")
   replace_all("$i.@langNote.*", "[.;]$", "")
diff --git a/src/main/resources/alma/fix/relatedRessourcesAndLinks.fix b/src/main/resources/alma/fix/relatedRessourcesAndLinks.fix
index 6b463d64e..68c846dfa 100644
--- a/src/main/resources/alma/fix/relatedRessourcesAndLinks.fix
+++ b/src/main/resources/alma/fix/relatedRessourcesAndLinks.fix
@@ -1,4 +1,4 @@
-set_array("sameAs[]")
+add_array("sameAs[]")
 
 
 # 035 - System Control Number (R) - Subfield: $a (NR)
@@ -51,12 +51,12 @@ end
 
 # 770 - Supplement/Special Issue Entry (R) - Subflied: $i (R), $t (NR), $w (R)
 
-set_array("supplement[]")
+add_array("supplement[]")
 
 do list(path:"77008", "var":"$i")
   if any_match("$i.i", "Beil.*|Supp.*")
-    set_hash( "supplement[].$append")
-    set_array("supplement[].$last.note[]")
+    add_hash( "supplement[].$append")
+    add_array("supplement[].$last.note[]")
     do list(path:"$i.i","var":"$j")
       copy_field("$j","supplement[].$last.note[].$append")
     end
@@ -77,7 +77,7 @@ replace_all("supplement[].*.label","<<|>>","")
 # it describes the relation between a published ressource and its superordinate series or collection.
 # in contrast to containedIn it is a standalone publication
 
-set_array("isPartOf[]")
+add_array("isPartOf[]")
 
 # 773 - Host Item Entry (R) Subfield: $w (NR), $t (NR), $q (NR)
 
@@ -85,16 +85,16 @@ unless any_match("leader", "^.{7}[ad].*")
   do list(path: "773??", "var": "$i")
     unless any_equal("$i.9","LOCAL")
       do list(path: "$i.w", "var": "$j")
-        set_array("isPartOf[].$append.type[]", "IsPartOfRelation")
-        set_array("isPartOf[].$last.hasSuperordinate[]")
-        set_hash( "isPartOf[].$last.hasSuperordinate[].$append")
+        add_array("isPartOf[].$append.type[]", "IsPartOfRelation")
+        add_array("isPartOf[].$last.hasSuperordinate[]")
+        add_hash( "isPartOf[].$last.hasSuperordinate[].$append")
         if all_match("$j", "^\\((?:DE-600|DE-605)\\)(.*)$")
           copy_field("$j", "isPartOf[].$last.hasSuperordinate[].$last.id")
         end
         copy_field("$i.t", "isPartOf[].$last.hasSuperordinate[].$last.label")
         call_macro("alternateGraphicRepresationIsPartOf",variable:"$i")
         copy_field("$i.q", "isPartOf[].$last.numbering")
-        set_array("isPartOf[].$last.note[]")
+        add_array("isPartOf[].$last.note[]")
         do list(path:"$i.i","var":"$j")
           copy_field("$j","isPartOf[].$last.note[].$append")
         end
@@ -107,17 +107,17 @@ end
 # 490 with 1. Indicator 1 has an identical entry in 830. So only 490 with 1. Indicator 0
 
 do list(path: "4900?", "var": "$i")
-  set_array("isPartOf[].$append.type[]", "IsPartOfRelation")
-  set_array("isPartOf[].$last.hasSuperordinate[]")
-  set_hash( "isPartOf[].$last.hasSuperordinate[].$append")
-  set_array("isPartOf[].$last.hasSuperordinate[].$last.label")
+  add_array("isPartOf[].$append.type[]", "IsPartOfRelation")
+  add_array("isPartOf[].$last.hasSuperordinate[]")
+  add_hash( "isPartOf[].$last.hasSuperordinate[].$append")
+  add_array("isPartOf[].$last.hasSuperordinate[].$last.label")
   do list(path:"$i.a", "var":"$j")
     copy_field("$j", "isPartOf[].$last.hasSuperordinate[].$last.label.$append")
   end
   join_field("isPartOf[].$last.hasSuperordinate[].$last.label", " / ")
   call_macro("alternateGraphicRepresationIsPartOf",variable:"$i")
 
-  set_array("isPartOf[].$last.numbering")
+  add_array("isPartOf[].$last.numbering")
   do list(path:"$i.v", "var":"$j")
     copy_field("$j", "isPartOf[].$last.numbering.$append")
   end
@@ -129,13 +129,13 @@ end
 # Element can be repeatable with local entries they have subfield $M.
 
 do list(path: "830??", "var": "$i")
-  set_array("isPartOf[].$append.type[]", "IsPartOfRelation")
-  set_array("isPartOf[].$last.hasSuperordinate[]")
-  set_hash( "isPartOf[].$last.hasSuperordinate[].$append")
+  add_array("isPartOf[].$append.type[]", "IsPartOfRelation")
+  add_array("isPartOf[].$last.hasSuperordinate[]")
+  add_hash( "isPartOf[].$last.hasSuperordinate[].$append")
   if all_match("$i.w", "^\\((?:DE-600|DE-605)\\)(.*)$")
     copy_field("$i.w", "isPartOf[].$last.hasSuperordinate[].$last.id")
   end
-  set_array("isPartOf[].$last.hasSuperordinate[].$last.label")
+  add_array("isPartOf[].$last.hasSuperordinate[].$last.label")
   do list(path:"$i.a", "var":"$j")
     copy_field("$j", "isPartOf[].$last.hasSuperordinate[].$last.label.$append")
   end
@@ -154,7 +154,7 @@ replace_all("isPartOf[].*.hasSuperordinate[].*.label","<<|>>","")
 # containedIn
 # containedIn only states ressources that are not published by them self but as part of a host ressource.
 
-set_array("containedIn[]")
+add_array("containedIn[]")
 
 # 773 - Host Item Entry (R)  - $w  (R)
 
@@ -163,15 +163,15 @@ if any_match("leader", "^.{7}[ad].*")
     do list(path: "773??", "var": "$i")
       unless any_equal("$i.9","LOCAL")
         do list(path: "$i.w", "var": "$j")
-          set_array("isPartOf[].$append.type[]", "IsPartOfRelation")
-          set_array("isPartOf[].$last.hasSuperordinate[]")
-          set_hash( "isPartOf[].$last.hasSuperordinate[].$append")
+          add_array("isPartOf[].$append.type[]", "IsPartOfRelation")
+          add_array("isPartOf[].$last.hasSuperordinate[]")
+          add_hash( "isPartOf[].$last.hasSuperordinate[].$append")
           if all_match("$j", "^\\((?:DE-600|DE-605)\\)(.*)$")
             copy_field("$j", "isPartOf[].$last.hasSuperordinate[].$last.id")
           end
           copy_field("$i.t", "isPartOf[].$last.hasSuperordinate[].$last.label")
           copy_field("$i.q", "isPartOf[].$last.numbering")
-          set_array("isPartOf[].$last.note[]")
+          add_array("isPartOf[].$last.note[]")
           do list(path:"$i.i","var":"$j")
             copy_field("$j","isPartOf[].$last.note[].$append")
           end
@@ -182,7 +182,7 @@ if any_match("leader", "^.{7}[ad].*")
     do list(path:"773??", "var":"$i")
       do list(path:"$i.w", "var":"$j")
         if any_match("$j","^\\(DE-(600|605)\\).*")
-          set_hash( "containedIn[].$append")
+          add_hash( "containedIn[].$append")
           copy_field("$j","containedIn[].$last.id")
           copy_field("$i.t","containedIn[].$last.label")
         end
@@ -212,17 +212,17 @@ uniq("containedIn[]")
 
 # 776 - Additional Physical Form Entry (R) - $i (R), $w (R)
 
-set_array("primaryForm[]")
+add_array("primaryForm[]")
 
 do list(path: "77608", "var":"$i")
   if any_match ("$i.i", ".*eproduktion von.*")
-    set_hash( "primaryForm[].$append")
+    add_hash( "primaryForm[].$append")
     if all_match("$i.w", "^\\((?:DE-600|DE-605)\\)(.*)$")
       copy_field("$i.w", "primaryForm[].$last.id")
     end
     paste("primaryForm[].$last.label", "$i.i", "$i.w")
     replace_all("primaryForm[].$last.label", "\\((?:DE-600|DE-605)\\)", "")
-    set_array("primaryForm[].$last.note[]")
+    add_array("primaryForm[].$last.note[]")
     do list(path:"$i.i","var":"$j")
       copy_field("$j","primaryForm[].$last.note[].$append")
     end
@@ -234,11 +234,11 @@ replace_all("primaryForm[].*.id", "^\\(DE-600\\)(.*)$", "http://lobid.org/resour
 
 # secondaryForm
 
-set_array("secondaryForm[]")
+add_array("secondaryForm[]")
 
 do list(path: "77608", "var":"$i")
   if any_match ("$i.i", ".*eproduktion")
-    set_hash( "secondaryForm[].$append")
+    add_hash( "secondaryForm[].$append")
     if all_match("$i.w", "^\\((?:DE-600|DE-605)\\)(.*)$")
       do list(path:"$i.w", "var":"$j")
         replace_all("$j", "^\\(DE-605\\)(.*)$", "http://lobid.org/resources/$1#!")
@@ -254,7 +254,7 @@ end
 # 856 - Electronic Location and Access (R) - Subfield: $u (R) $3 (NR)
 # 1. Indicator: 4 = HTTP
 
-set_array("tableOfContents[]")
+add_array("tableOfContents[]")
 
 do list(path: "856??", "var":"$i")
   if all_match("$i.3", "^[Ii][Nn][Hh][aA][lL][tT][sS][vV].*") # Inhaltsverzeichnis
@@ -263,7 +263,7 @@ do list(path: "856??", "var":"$i")
   end
 end
 
-set_array("description[]")
+add_array("description[]")
 
 do list(path: "856??", "var":"$i")
   if all_match("$i.3", "^[Ii][Nn][Hh][aA][lL][tT][sS][tT].*") # Inhaltstext
@@ -272,7 +272,7 @@ do list(path: "856??", "var":"$i")
   end
 end
 
-set_array("seeAlso[]")
+add_array("seeAlso[]")
 
 do list(path: "856??", "var":"$i")
   if all_match("$i.3", "^[zZ][uU][sS].*") # Zusätzliche Angaben
@@ -281,7 +281,7 @@ do list(path: "856??", "var":"$i")
   end
 end
 
-set_array("fulltextOnline[]")
+add_array("fulltextOnline[]")
 
 do list(path: "856??", "var":"$i")
   if exists("$i.u")
@@ -361,22 +361,22 @@ end
 # 775 - Other Edition Entry (R) - Subfield: $w (R), $t (NR), $i (R), $n (R), $x(NR), $z (R)
 # 776 - Additional Physical Form Entry (R) -  Subfield: $w (R), $t (NR), $i (R), $n (R), $x (NR), $z (R)
 
-set_array("related[]")
+add_array("related[]")
 do list(path:"775??|776??", "var":"$i")
   unless any_match ("$i.i", ".*eproduktion von.*|.*eproduktion")
     do list_as("$hbzId":"$i.w", "$isbn":"$i.z", "$label":"$i.t", "$note":"$i.n", "$issn":"$i.x", "$info":"$i.i")
       unless in("$isbn", "related[].*.isbn[]") # Skip duplicates
-        set_hash("related[].$append")
+        add_hash("related[].$append")
         if all_match("$hbzId", "^\\((DE-600|DE-605)\\).*$")
           copy_field("$hbzId", "related[].$last.id")
         end
-        set_array("related[].$last.note[]")
+        add_array("related[].$last.note[]")
         paste("related[].$last.note[].$append","$info", "$note")
         replace_all("related[].$last.note[].$last", "Erscheint auch als ","")
         copy_field("$label", "related[].$last.label")
-        set_array("related[].$last.issn[]")
+        add_array("related[].$last.issn[]")
         copy_field("$issn", "related[].$last.issn[].$append")
-        set_array("related[].$last.isbn[]")
+        add_array("related[].$last.isbn[]")
         isbn("$isbn", to:"isbn13")
         copy_field("$isbn", "related[].$last.isbn[].$append")
         isbn("$isbn", to:"isbn10")
@@ -395,10 +395,10 @@ end
 
 do list(path: "50580", "var":"$i")
   if any_match("$i.6","[A-Z]{2}\\d*")
-    set_hash("related[].$append")
+    add_hash("related[].$append")
     paste("related[].$last.id","~http://lobid.org/resources/","$i.6","~#!",join_char:"")
     copy_field("$i.t","related[].$last.label")
-    set_array("related[].$last.note[]")
+    add_array("related[].$last.note[]")
     copy_field("$i.g","related[].$last.note[].$append")
   end
 end
@@ -407,7 +407,7 @@ replace_all("related[].*.id", "^\\(DE-605\\)(.*)$", "http://lobid.org/resources/
 replace_all("related[].*.id", "^\\(DE-600\\)(.*)$", "http://lobid.org/resources/ZDB-$1#!")
 replace_all("related[].*.label","<<|>>","")
 
-set_array("inCollection[]")
+add_array("inCollection[]")
 
 # hbz NZ
 # digiBib hbz Vk
@@ -577,17 +577,17 @@ end
 # end
 
 
-set_array("inCollection[].*.type[]","Collection")
+add_array("inCollection[].*.type[]","Collection")
 
 
 # predecessor
 
 # 780 - Preceding Entry (R) - Subfield: $t (NR), $w (R)
 
-set_array("predecessor[]")
+add_array("predecessor[]")
 
 do list(path:"780??", "var":"$i")
-  set_hash( "predecessor[].$append")
+  add_hash( "predecessor[].$append")
   copy_field("$i.t", "predecessor[].$last.label")
   do list(path:"$i.w", "var":"$j")
     if all_match("$j", "^\\((?:DE-600|DE-605)\\)(.*)$")
@@ -595,7 +595,7 @@ do list(path:"780??", "var":"$i")
     end
   end
   replace_all("predecessor[].$last.label", "\\((?:DE-600|DE-605)\\)", "")
-  set_array("predecessor[].$last.note[]")
+  add_array("predecessor[].$last.note[]")
   do list(path:"$i.i","var":"$j")
     copy_field("$j","predecessor[].$last.note[].$append")
   end
@@ -611,17 +611,17 @@ replace_all("predecessor[].*.label","Vorg. ---> ","")
 
 # 785 - Succeeding Entry (R) - Subfield: $t (NR), $w (R)
 
-set_array("successor[]")
+add_array("successor[]")
 
 do list(path:"785??", "var":"$i")
-  set_hash( "successor[].$append")
+  add_hash( "successor[].$append")
   copy_field("$i.t", "successor[].$last.label")
   do list(path:"$i.w", "var":"$j")
     if all_match("$j", "^\\((?:DE-600|DE-605)\\)(.*)$")
       copy_field("$j", "successor[].$last.id")
     end
   end
-  set_array("successor[].$last.note[]")
+  add_array("successor[].$last.note[]")
   do list(path:"$i.i","var":"$j")
     copy_field("$j","successor[].$last.note[].$append")
   end
@@ -633,7 +633,7 @@ replace_all("successor[].*.id", "^\\(DE-600\\)(.*)$", "http://lobid.org/resource
 
 # 130 - Main Entry-Uniform Title (NR)
 
-set_array("exampleOfWork.label")
+add_array("exampleOfWork.label")
 copy_field("1300 .a", "exampleOfWork.label.$append")
 copy_field("1300 .g", "exampleOfWork.label.$append")
 do list(path: "1300 .0", "var":"$i")
@@ -654,16 +654,16 @@ end
 join_field("exampleOfWork.label", " ")
 
 unless any_equal("exampleOfWork.label", "")
-  set_array("exampleOfWork.type[]","Work")
+  add_array("exampleOfWork.type[]","Work")
 end
 
 replace_all("exampleOfWork.label","<<|>>","")
 
 # 041 h|k - Language code of original and/or intermediate translations of text
 
-set_array("lang_temp")
+add_array("lang_temp")
 copy_field("041[ 01] .[hk]", "lang_temp.$append")
-set_array("exampleOfWork.language[]")
+add_array("exampleOfWork.language[]")
 do list(path:"lang_temp", "var": "$i")
   copy_field("$i","exampleOfWork.language[].$append.id")
   copy_field("$i","exampleOfWork.language[].$last.label")
@@ -679,10 +679,10 @@ prepend("exampleOfWork.language[].*.id", "http://id.loc.gov/vocabulary/iso639-2/
 # 711 - Added Entry-Meeting Name (R)
 # 730 - Added Entry-Uniform Title (R)
 
-set_array("containsExampleOfWork[]")
+add_array("containsExampleOfWork[]")
 do list(path:"700?2|710?2|711?2|730?2", "var": "$i")
-  set_array("containsExampleOfWork[].$append.label")
-  set_array("containsExampleOfWork[].$last.creatorOfWork")
+  add_array("containsExampleOfWork[].$append.label")
+  add_array("containsExampleOfWork[].$last.creatorOfWork")
   copy_field("$i.a","containsExampleOfWork[].$last.creatorOfWork.$append")
   copy_field("$i.d","containsExampleOfWork[].$last.creatorOfWork.$append")
   copy_field("$i.t","containsExampleOfWork[].$last.label.$append")
@@ -693,8 +693,8 @@ do list(path:"700?2|710?2|711?2|730?2", "var": "$i")
   join_field("containsExampleOfWork[].$last.creatorOfWork", " ")
   copy_field("$i.n","containsExampleOfWork[].$last.workNumbering")
   copy_field("$i.r","containsExampleOfWork[].$last.musicalKey")
-  set_array("containsExampleOfWork[].$last.type[]","Work")
-  set_array("containsExampleOfWork[].$last.instrumentation[]")
+  add_array("containsExampleOfWork[].$last.type[]","Work")
+  add_array("containsExampleOfWork[].$last.instrumentation[]")
   do list(path:"$i.m","var":"$j")
     copy_field("$j","containsExampleOfWork[].$last.instrumentation[].$append")
   end
diff --git a/src/main/resources/alma/fix/subjects.fix b/src/main/resources/alma/fix/subjects.fix
index eb23c4315..b0aeb537a 100644
--- a/src/main/resources/alma/fix/subjects.fix
+++ b/src/main/resources/alma/fix/subjects.fix
@@ -1,6 +1,6 @@
 # natureOfContent combines Formschlagwörter (`689 $A: f`) and Formangaben (`655`)
 
-set_array("natureOfContent[]")
+add_array("natureOfContent[]")
 
 
 # 655 - Index Term-Genre/Form (R),  Subfield: $a (NR), $0 (R)
@@ -51,7 +51,7 @@ do list(path: "natureOfContent[]", "var":"$i")
   end
 end
 
-set_array("subject[]")
+add_array("subject[]")
 
 
 # I change the approach from element oriented (all 630) to a subject/concept kind oriented approach (all LCSH, all GND, all keywords, etc.)
@@ -67,7 +67,7 @@ set_array("subject[]")
 
 
 do list(path:"600?4|610?4|611?4|630?4|648?4|650?4|651?4|653??|688??", "var":"$i")
-  set_array("subject[].$append.type[]","Concept")
+  add_array("subject[].$append.type[]","Concept")
   add_field("subject[].$last.source.label","Freie Verschlagwortung")
   add_field("subject[].$last.source.id","https://www.wikidata.org/wiki/Q47524318")
   call_macro("subjectLabel")
@@ -75,7 +75,7 @@ do list(path:"600?4|610?4|611?4|630?4|648?4|650?4|651?4|653??|688??", "var":"$i"
 end
 
 do list(path:"600?0|610?0|611?0|630?0|648?0|650?0|651?0", "var":"$i")
-  set_array("subject[].$append.type[]","Concept")
+  add_array("subject[].$append.type[]","Concept")
   add_field("subject[].$last.source.label","Library of Congress Subject Headings")
   add_field("subject[].$last.source.id","https://id.loc.gov/authorities/subjects.html")
   call_macro("subjectLabel")
@@ -84,7 +84,7 @@ end
 
 do list(path:"600?7|610?7|611?7|630?7|648?7|650?7|651?7", "var":"$i")
   if any_match("$i.2",".*fast.*")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","FAST (Faceted Application of Subject Terminology)")
     add_field("subject[].$last.source.id","http://fast.oclc.org/")
     call_macro("subjectLabel")
@@ -93,7 +93,7 @@ do list(path:"600?7|610?7|611?7|630?7|648?7|650?7|651?7", "var":"$i")
 end
 
 do list(path:"600?2|610?2|611?2|630?2|648?2|650?2|651?2", "var":"$i")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Medical Subject Headings")
     add_field("subject[].$last.source.id","https://www.nlm.nih.gov/mesh/meshhome.html")
     call_macro("subjectLabel")
@@ -102,7 +102,7 @@ end
 
 do list(path:"600?7|610?7|611?7|630?7|648?7|650?7|651?7", "var":"$i")
   if any_match("$i.2",".*(mesh|MeSH).*")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Medical Subject Headings")
     add_field("subject[].$last.source.id","https://www.nlm.nih.gov/mesh/meshhome.html")
     call_macro("subjectLabel")
@@ -114,7 +114,7 @@ end
 
 do list(path:"600??", "var":"$i")
   if any_match("$i.0","^\\(DE-588\\)(.*)$")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Gemeinsame Normdatei (GND)")
     add_field("subject[].$last.source.id","https://d-nb.info/gnd/7749153-1")
     call_macro("gndPersonCombinedLabel",field:"$i")
@@ -147,7 +147,7 @@ end
 
 do list(path:"611??", "var":"$i")
   if any_match("$i.0","^\\(DE-588\\)(.*)$")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Gemeinsame Normdatei (GND)")
     add_field("subject[].$last.source.id","https://d-nb.info/gnd/7749153-1")
     call_macro("gndEventCombinedLabel",field:"$i")
@@ -180,7 +180,7 @@ end
 
 do list(path:"610??|630??|648??|650??|651??", "var":"$i")
   if any_match("$i.0","^\\(DE-588\\)(.*)$")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Gemeinsame Normdatei (GND)")
     add_field("subject[].$last.source.id","https://d-nb.info/gnd/7749153-1")
     call_macro("gndOtherCombinedLabel",field:"$i")
@@ -214,7 +214,7 @@ end
 
 # compare GND identifier (idn) with ALMA GND enrichment elements:
 do list(path:"subject[]", "var":"$i")
-  set_array("$i.altLabel[]")
+  add_array("$i.altLabel[]")
   do list(path:"GPN??", "var": "$z")
     if in ("$i.@gndIdn", "$z.B") # Person labels have no character between $a (Name) and $b (Number).
       call_macro("gndPersonCombinedLabel",field:"$z")
@@ -244,7 +244,7 @@ end
 
 do list(path:"0820 |08200", "var":"$i")
   do list(path:"$i.a", "var": "$j")
-    set_array("subject[].$append.type[]","Concept")
+    add_array("subject[].$append.type[]","Concept")
     add_field("subject[].$last.source.label","Dewey-Dezimalklassifikation")
     add_field("subject[].$last.source.id","https://d-nb.info/gnd/4149423-4")
     copy_field("$j","subject[].$last.label")
@@ -267,7 +267,7 @@ do list(path:"084??", "var":"$i")
         copy_field("$j", "subject[].$last.notation")
         replace_all("subject[].$last.notation","https://nwbib.de/subjects#N(.*)$","$1")
       end
-      set_array("subject[].$last.type[]","Concept")
+      add_array("subject[].$last.type[]","Concept")
       add_field("subject[].$last.source.id","https://nwbib.de/subjects")
       add_field("subject[].$last.source.label","Sachsystematik der Nordrhein-Westfälischen Bibliographie")
     end
@@ -277,7 +277,7 @@ do list(path:"084??", "var":"$i")
       unless any_match("$i.2", "z") # filter out any z Other - Classification
         do list(path:"$i.a", "var":"$j")
           copy_field("$j", "subject[].$append.notation")
-          set_array("subject[].$last.type[]","Concept")
+          add_array("subject[].$last.type[]","Concept")
           # LBZ-Notationen fka rpb2 fka RPB-Sachgruppen und Zusätze
           if any_match("$i.2", "rpb")
             if any_match("$j","\\d{3}")
@@ -314,7 +314,7 @@ do list(path:"084??", "var":"$i")
               copy_field("$j","subject[].$last.label")
               lookup("subject[].$last.label", "dnbSachgruppen")
               # Also use all DNB and ZDB Sachgruppen as DDC too.
-              set_array("subject[].$append.type[]","Concept")
+              add_array("subject[].$append.type[]","Concept")
               add_field("subject[].$last.source.label","Dewey-Dezimalklassifikation")
               add_field("subject[].$last.source.id","https://d-nb.info/gnd/4149423-4")
               copy_field("$j","subject[].$last.label")
@@ -344,7 +344,7 @@ lookup("@rvkNotations","rvk",delete:"true")
 split_field("@rvkNotations", ",")
 do list(path: "@rvkNotations","var":"$i")
   copy_field("$i","subject[].$append.notation")
-  set_array("subject[].$last.type[]","Concept")
+  add_array("subject[].$last.type[]","Concept")
   add_field("subject[].$last.source.label","RVK (Regensburger Verbundklassifikation)")
   add_field("subject[].$last.source.id","https://d-nb.info/gnd/4449787-8")
 end
@@ -370,7 +370,7 @@ do list (path: "subject[]", "var": "$i")
   do list(path: "$i.componentList[]", "var": "$j")
     if any_match("$j.label",".+") # Due to special cataloguing there can be empty label-properties. That are cleaned up at the end. These need to be skipped.
       unless exists("$j.type[].1")
-        set_array("$j.type[]","SubjectHeading") # type: SubjectHeading as Fallback.
+        add_array("$j.type[]","SubjectHeading") # type: SubjectHeading as Fallback.
       end
     end
     if any_match("$j.dateOfBirthAndDeath", "^([012][0-9]{3})-.*")
@@ -428,7 +428,7 @@ do list (path: "subject[]", "var": "$i")
     end
     replace_all("$j.label","<<|>>","")
     # compare GND identifier (idn) with ALMA GND enrichment elements:
-    set_array("$j.altLabel[]")
+    add_array("$j.altLabel[]")
     do list(path:"GPN??", "var": "$z")
       if in ("$j.@gndIdn", "$z.B") # Person labels have no character between $a (Name) and $b (Number).
         call_macro("gndPersonCombinedLabel",field:"$z")
@@ -461,7 +461,7 @@ uniq("subject[]")
 
 # spatial
 
-set_array("spatial[]")
+add_array("spatial[]")
 
 do list(path:"084??", "var":"$i")
   do list(path:"$i.0", "var":"$j")
@@ -474,7 +474,7 @@ do list(path:"084??", "var":"$i")
       if any_match("$j", "https://nwbib.de/spatial#N(.*)$")
         copy_field("$j", "spatial[].$last.notation")
       end
-      set_array("spatial[].$last.type[]","Concept")
+      add_array("spatial[].$last.type[]","Concept")
       add_field("spatial[].$last.source.id","https://nwbib.de/spatial")
       add_field("spatial[].$last.source.label","Raumsystematik der Nordrhein-Westfälischen Bibliographie")
       copy_field("$j", "spatial[].$last.focus.id")
@@ -483,7 +483,7 @@ do list(path:"084??", "var":"$i")
   do list(path:"$i.a", "var":"$j")
     # RPB spatial
     if any_match("$j","^rpbr.*")
-      set_array("spatial[].$append.type[]","Concept")
+      add_array("spatial[].$append.type[]","Concept")
       copy_field("$j","$i.@rpbrNotationId")
       replace_all("$i.@rpbrNotationId","rpbr_(99_o)?(.*)_","https://rpb.lobid.org/spatial#n$2")
       copy_field("$i.@rpbrNotationId","spatial[].$last.id")
@@ -500,7 +500,7 @@ do list(path:"spatial[]", "var":"$i")
   if any_contain("$i.source.id","https://nwbib.de/spatial")
     replace_all("$i.notation","https://nwbib.de/spatial#N(.*)$","$1")
     copy_field("$i.focus.id","$i.focus.label")
-    set_array("$i.focus.type[]")
+    add_array("$i.focus.type[]")
     copy_field("$i.focus.id","$i.focus.type[].$append")
     copy_field("$i.focus.id","$i.focus.@geoData")
     lookup("$i.focus.id","nwbibWikidataId",delete:"true")
@@ -519,7 +519,7 @@ do list(path:"spatial[]", "var":"$i")
   end
 end
 
-set_array("subjectslabels[]")
+add_array("subjectslabels[]")
 do list(path:"subject[]","var":"$i")
   if any_match("$i.type[]","Concept")
     unless exists("$i.notation")
diff --git a/src/main/resources/alma/fix/titleRelatedFields.fix b/src/main/resources/alma/fix/titleRelatedFields.fix
index 514b789c8..464ec5e9c 100644
--- a/src/main/resources/alma/fix/titleRelatedFields.fix
+++ b/src/main/resources/alma/fix/titleRelatedFields.fix
@@ -7,7 +7,7 @@ end
 replace_all("@title","<<|>>","")
 
 
-set_array("@titleOfSubSeries_n") # Subvolume numbering
+add_array("@titleOfSubSeries_n") # Subvolume numbering
 do list(path:"245??.n", "var":"$i")
   unless all_equal("$i","[...]")
     copy_field("$i","@titleOfSubSeries_n.$append")
@@ -15,7 +15,7 @@ do list(path:"245??.n", "var":"$i")
 end
 join_field("@titleOfSubSeries_n", ". ")
 
-set_array("@titleOfSubSeries_p")
+add_array("@titleOfSubSeries_p")
 
 do list(path:"245??.p", "var":"$i") # Subvolume title
   unless all_equal("$i","[...]")
@@ -59,15 +59,15 @@ do list(path:"245??","var":"$i")
             copy_field("$880.a","$AGR.record.@title")
             copy_field("$880.n","$AGR.record.@titleOfSubSeries_n")
             unless exists("$AGR.record.@titleOfSubSeries_p")
-              set_array("$AGR.record.@titleOfSubSeries_p")
+              add_array("$AGR.record.@titleOfSubSeries_p")
             end
             copy_field("$880.p","$AGR.record.@titleOfSubSeries_p.$append")
             unless exists("$AGR.record.otherTitleInformation[]")
-              set_array("$AGR.record.otherTitleInformation[]")
+              add_array("$AGR.record.otherTitleInformation[]")
             end
             copy_field("$880.b","$AGR.record.otherTitleInformation[].$append")
             unless exists("$AGR.record.responsibilityStatement[]")
-              set_array("$AGR.record.responsibilityStatement[]")
+              add_array("$AGR.record.responsibilityStatement[]")
             end
             copy_field("$880.c","$AGR.record.responsibilityStatement[].$append")
             end
@@ -77,11 +77,11 @@ do list(path:"245??","var":"$i")
         copy_field("$880.@script.label","alternateGraphicRepresentation[].$last.script.label")
         copy_field("$880.a","alternateGraphicRepresentation[].$last.record.@title")
         copy_field("$880.n","alternateGraphicRepresentation[].$last.record.@titleOfSubSeries_n")
-        set_array("alternateGraphicRepresentation[].$last.record.@titleOfSubSeries_p")
+        add_array("alternateGraphicRepresentation[].$last.record.@titleOfSubSeries_p")
         copy_field("$880.p","alternateGraphicRepresentation[].$last.record.@titleOfSubSeries_p.$append")
-        set_array("alternateGraphicRepresentation[].$last.record.otherTitleInformation[]")
+        add_array("alternateGraphicRepresentation[].$last.record.otherTitleInformation[]")
         copy_field("$880.b","alternateGraphicRepresentation[].$last.record.otherTitleInformation[].$append")
-        set_array("alternateGraphicRepresentation[].$last.record.responsibilityStatement[]")
+        add_array("alternateGraphicRepresentation[].$last.record.responsibilityStatement[]")
         copy_field("$880.c","alternateGraphicRepresentation[].$last.record.responsibilityStatement[].$append")
         end
       end
@@ -140,7 +140,7 @@ end
 
 # 246 - Varying Form of Title (R) - Subfields: $a (NR)
 
-set_array("alternativeTitle[]")
+add_array("alternativeTitle[]")
 copy_field("246?[ 345678].a","alternativeTitle[].$append")
 
 do list(path:"246?[ 345678]","var":"$i")
@@ -159,7 +159,7 @@ end
 
 replace_all("alternativeTitle[].*","<<|>>","")
 
-set_array("otherTitleInformation[]")
+add_array("otherTitleInformation[]")
 copy_field("245??.b","otherTitleInformation[].$append")
 
 
@@ -174,7 +174,7 @@ end
 
 # 250 - Edition Statement (R) - Subfields: $a (NR)
 
-set_array("edition[]")
+add_array("edition[]")
 copy_field("250  .a","edition[].$append")
 replace_all("edition[].*","\\s?[./]\\s?$","")
 
@@ -189,7 +189,7 @@ end
 # 515 - Numbering Peculiarities Note (R)
 # Prefer 264 over 260 since it can create duplicate info and 260 is discontinued in RDA.
 
-set_array("publication[]")
+add_array("publication[]")
 if exists("264[ 23][ 1]")
   call_macro("publication",field:"2643[ 1]") # 3 - Current/Latest
   call_macro("publication",field:"2642[ 1]") # 2 - Intervening
@@ -200,7 +200,7 @@ else
   call_macro("publication",field:"260 [ 1]") # # - Not applicable/No information provided/Earliest
 end
 
-set_array("manufacture[]")
+add_array("manufacture[]")
 if exists("264[ 23]3")
   call_macro("manufacture",field:"26433") # 3 - Current/Latest
   call_macro("manufacture",field:"26423") # 2 - Intervening
@@ -211,7 +211,7 @@ end
 
 if exists("publication[].$first")
   copy_field("362??.a","publication[].$first.publicationHistory")
-    set_array("publication[].$first.frequency[]")
+    add_array("publication[].$first.frequency[]")
     if any_match("leader","^.{6}(a[bis]|m[bis]).*$") # checks if continous ressource
       unless any_match("008","^.{18}[#\\| u].*$") # filters out not matching values and also the value unknown
         copy_field("008","publication[].$first.frequency[].$append.id")
@@ -227,7 +227,7 @@ if exists("publication[].$first")
         end
       end
     end
-    set_array("publication[].$first.note[]")
+    add_array("publication[].$first.note[]")
     copy_field("515??.a","publication[].$first.note[].$append")
   do list(path:"500  ", "var":"$i")
     if any_match("$i.a", "^.*saṃ. \\d{4}=(\\d{4}).*Chr.*")
@@ -283,15 +283,15 @@ end
 # 533 - Reproduction Note (R)
 
 do list(path:"533  ", "var": "$i")
-  set_hash( "publication[].$append")
-  set_array("publication[].$last.type[]","SecondaryPublicationEvent")
-  set_array("publication[].$last.location[]")
+  add_hash( "publication[].$append")
+  add_array("publication[].$last.type[]","SecondaryPublicationEvent")
+  add_array("publication[].$last.location[]")
   do list(path:"$i.b","var":"$j")
     copy_field("$j", "publication[].$last.location[].$append")
   end
-  set_array("publication[].$last.description[]")
+  add_array("publication[].$last.description[]")
   copy_field("$i.a", "publication[].$last.description[].$append")
-  set_array("publication[].$last.publishedBy[]")
+  add_array("publication[].$last.publishedBy[]")
   copy_field("$i.c", "publication[].$last.publishedBy[].$append")
   do list(path: "$i.d", "var":"$j")
     replace_all("$j", "\\[|\\]|ca. |c ", "")
@@ -328,14 +328,14 @@ end
 
 # 246 - Varying Form of Title (R) - $a - Title proper/short title (NR)
 
-set_array("titleKeyword[]")
+add_array("titleKeyword[]")
 do list(path: "24610", "var": "$i")
   copy_field("$i.a","titleKeyword[].$append")
 end
 
 
 # 210 - Abbreviated Title (R) - $a - Abbreviated title (NR)
-set_array("shortTitle[]")
+add_array("shortTitle[]")
 do list(path: "210??", "var": "$i")
   copy_field("$i.a","shortTitle[].$append")
 end
diff --git a/src/main/resources/rvk/cg-to-rvk-json.fix b/src/main/resources/rvk/cg-to-rvk-json.fix
index b070cd6f9..7f5dbb6e1 100644
--- a/src/main/resources/rvk/cg-to-rvk-json.fix
+++ b/src/main/resources/rvk/cg-to-rvk-json.fix
@@ -1,4 +1,4 @@
-set_array("rvk[]")
+add_array("rvk[]")
 
 do list(path: "084??", "var": "$i")
     if any_match("$i.2", "rvk")
@@ -6,7 +6,7 @@ do list(path: "084??", "var": "$i")
     end
 end
 uniq("rvk[]")
-set_array("id")
+add_array("id")
 do list(path: "035??", "var": "$i")
     if any_match("$i.a", "^\\(DE-605\\)(.*)")
         copy_field("$i.a","id.$append")
diff --git a/src/main/resources/rvk/cg-to-rvk-tsv.fix b/src/main/resources/rvk/cg-to-rvk-tsv.fix
index 345ebb85c..bd117c6b9 100644
--- a/src/main/resources/rvk/cg-to-rvk-tsv.fix
+++ b/src/main/resources/rvk/cg-to-rvk-tsv.fix
@@ -1,6 +1,6 @@
-set_array("records[]")
-set_array("@id[]")
-set_array("rvk[]")
+add_array("records[]")
+add_array("@id[]")
+add_array("rvk[]")
 
 do list(path: "084??", "var": "$i")
     if any_match("$i.2", "rvk")