Question : keep a form maximized

Hi:
I have two forms opened at the same time
The one at the back is opened as normal maximized form
The one at the front is opened as a dialog
There is a button in the second form(the dialog one) , this button is to open a report, and at the same time it is make the (the dialog form) invisible.
When I close the report, I make the (dialog form) visible again.
but the first form (which is at the back) appear as restored (I mean not maximized).
I did not understand why access act like that.
What can I do to make it remain maximized?
Please.

Answer : keep a form maximized

The concentrate now is at the dialog form which is on the front
And the form at the back is restored now(not maximized).
I need a code to maximize the form at the back. But this code I need to write it in the other form(dialog form).
How can I point to (form1) from (form2) to do this maximization of (form1).
I am not sure if I describe my problem well?