You can only use —> Selection-Tag-DATAFIELDS for Selection-Tags and Check-Box-Groups. (But if it is my new version of Filtering-Engine, then it also would work on any other DATAFIELD in your DB). I am not sure, which one i have written down here xDDDDDDDDDDD:rofl:
BTW: You can of course also change the PREFIXES → DD/CBG/ST , but i do not know why you should do this.
When you get this working, you will have a lot of fun & pleasure with it 