Erik,
Thanks. But I have tried to do exactly that and never got it to work (VFP6.0).
What I did is:
- define xx as a report variable in a report that uses data grouping
- in the on exit run expression for my group I put xx=xx+1
- in the detail band, I show the value of xx

And, no matter what I do, it is always 0. The report is long, and the "on exit" must have run hundreds of times.

I tried the same with the on exit in page footer, in a multiple page report, with same result.

Please throw in some light....I need it!