[AccessD] Forgotten Syntax

I want to assign a value to a form that is guaranteed to be open. Scenario:
OnEnter of a field on form A pops up a dialog that asks for a couple of
values. Then I want to post the result to the field on form A and close the
popup.

Something like:

Forms("A").form.B.ResultPlace = Me.Result

or something. I keep forgetting this syntax. This time I'll tatoo it.

A.