requery when txt box is populated by calender form

[David b]

I have a text box on a form header into which a date is entered to filter the data in the continuous form. A requery in after update does the trick.
If I populate the text box from a calender form then the after update does not work.
I can fire the requery from the calender form but I am calling the calender from more than one form so that does not work.

Any thoughts on how do deal with this
TIA
David b