I need to reference a control in a subform on a page(tab) in a form. I can't
find the right way to identify the page or is it even necessary
It's not: the syntax uses the Name property of the Subform control,
and of the control on the subform; the tab page or tab control are not
used. Just
Me!subformname.Form!controlname
whether the Subform is on a tab page or not.
Note that subformname is the Name property *of the Subform control*,
the box containing the form - not the name of the form within that
box. The names might be the same but they might not!
John W. Vinson[MVP]