Where to enter scripting function?

[Florian]

Glad you like it

You'd use it inside an action "Format value" in this case. See this post from the FAQ (Frequently Asked Questions) for an example which you can adapt to your case (field TITLE and the format string you've posted).

Actions and batch-operations

How to append the string " xyz" to the content of a tag field? Create a new action in an existing action group and choose Format value as action type. Field specifies the tag field the formatting rule should be applied to. Format string must have the field placeholder for the field selected above and the string which should be appended. Example: If you want to append the string " xyz" to the current value of the comment field: Action type: Format value Field: COMMENT Format string: %com…