[AccessD] RaiseEvent from subform to Parent

I'm trying to raise a custom event from an XP subform to its parent form
without any luck.  The event is declared public in the subform, is being
raised with the appropriate argument, and the parent form declared and
instantiated an object WithEvents, but the equivalent event procedure in
the parent form never fires.  Is this something that just can't be done
or have I missed a step somewhere?  JC?

Charlotte Foust