In 8.5 I just wrote my first 2 Formula Fields (FF) using a "For loop." The FF's work great EXCEPT when I try to concatenate them into another FF on which one of my Groups is (grouped and) sorted. The error message I get is "Group specified on a non-recurring field." Just printing these 2 FF's in a report is no problem. How can I use those 2 FF's in a Group sort FF?