cascading menus in sub form

[soulpiercing]

I am having trouble using a cascading menu in a subform. I got some info here a while back (thanks) but I keep getting a bug. I'll try to isolate a segment to attach later but here is the scenario:


MAIN is the main form

ART15 is the sub form

in ART15 I have GRADE

depending on the selection in GRADE, isolate a segment of a table PAY for the menu PAY in the ART15 sub form.


Thanks for any help