Writing Values for Pump

[Azrael4224]

Hello!

Thanks to your superb work, I'm able to read and configure the most of my heating system!
Now I'm trying to start the Circulation Pump and the Buffer Pump with an ebusctl command and set the power percentage to 100%. The command is acknowleding this with "Done" but nothing is changing. Same with DesiredTemp f.e. is working properly and changes the value.
https://github.com/john30/ebusd-configuration/blob/master/ebusd-2.x.x/de/vaillant/06.pms.csv row 17 is the Entry for the BufferPumpPower I want to change and I guess the "r;wi" means "write indirect". Right?

How do I change this value with the ebusctl, or how do I find out, which value is writing to this and I can change that?

Thanks in advance
Richard