Acc97: Problem with Find Dialog and Sub Form

[Tim ffitch]

Hi

I have a main form with some fields directly on the form and others on
a page of a Tab Control. On another page of the Tab Control I have a
sub form. In the On Current event of my main form I have some code
that refers to a field on the sub form. Under normal circumstances
this works fine. If I then select a field directly on the main form
and use the Find Dialog, everything works OK, but if I select a field
on the Tab Control and then use the Find Dialog an error is produced.
Error number 2455 "You entered an expression that has an invalid
reference to the property Form". My code then breaks on the line of
code that refers to the field on my sub form. It's acting as if the
instance of the form class in the sub form control has not yet
initialised. I have tried re-writing the code using the following
types of syntax.

Me.frm_SubFormName.Form.ControlName
Forms!frm_MainFormName!SubFormName!ControlName
Me.Controls("frm_SubFormName").Form.ControlName

All of these worked when navigating the form normally but not when try
to find a record when the field selected was on the Tab Control.

Has anyone come across this before? I would be grateful for any
assistance offered.

Kind regards
Tim ffitch