Trying to add a translator but doesn't work

[Couldosh]

Hi everyone,
I'm trying to add a custom translation but it doesn't work.
Here is my function that initialize my translator and add the custom translation to it :

func initTranslator(validate *validator.Validate) error { 
	translator := en.New()
	uni := ut.New(translator, translator)
	trans, found := uni.GetTranslator("en")
	if !found {
		return fmt.Errorf("translator not found")
	}
	err := en_translations.RegisterDefaultTranslations(validate, trans)
	if err != nil {
		return err
	}
	err = validate.RegisterTranslation(
		"DateValidator",
		trans,
		func(ut ut.Translator) error {
			return ut.Add("DateValidator", "The field doesn't match the date format \"yyyy-MM-dd\" nor \"yyyy-MM-dd hh:mm:ss\"", true)
		},
		func(ut ut.Translator, fe validator.FieldError) string {
			t, _ := ut.T("DateValidator", fe.Field())
			return t
		},
	)
	if err != nil {
		return err
	}
	return nil
}

When there's an invalid Date, I want that the error message looks like The field doesn't match the date format "yyyy-MM-dd" nor "yyyy-MM-dd hh:mm:ss"but the translation doesn't work and I have "Key: ModifLeaveRequest.modifLeaveInfos.date_from' Error:Field validation for 'date_from' failed on the 'DateValidatorNil' tag"

I would like to know what am I missing? Thank you very much.

[Couldosh]

The trans variable was a global one, that I used to translate the errors. I discovered that the trans variable was still nil when I wanted to use it.

Why? Because this line:
trans, found := uni.GetTranslator("en")

This create a new local variable called trans, it doesn't initialize the global variable. cf:global error variable remains nil after initialization

To fix it, I did that:

var found bool
trans, found = uni.GetTranslator("en")