Yeah, that's a limitation of how I built it. A trick I've used to make a form flexible so it can be called from any number of different forms is to store the name of the CALLING form (the form that opened it) in a hidden field on ZipLookupF. So you might have:

Docmd.OpenForm "ZipLookupF"
Forms!ZipLookupF!HiddenCallingFormName = "ClientF"

Now in the ZipLookupF instead of "hard coding" CustomerF, you could say:

Forms(HiddenCallingFormName)!City = City
Forms(HiddenCallingFormName)!State = State

I use this trick in my Calendar Seminar and Templates so that ANY form can call the Calendar popup.

Good question!

Or to make THAT code even MORE flexible, you could say:

Docmd.OpenForm "ZipLookupF"
Forms!ZipLookupF!HiddenCallingFormName = Me.Name

And now you can just drop that code into ANY form without having to edit the form name.

Basically, there are multiple ways to reference an open form in Access. I've generally taught:

Forms!CustomerF!FirstName

But this is also acceptable, and allows for programmability:

Forms("CustomerF")!FirstName

Thanks Richard
I'll try that out.

My pleasure.

That works GREAT.. Thanks Richard
So now I can use my frmZipCodeSelector from any other form.
Just put the HiddenCallingFormName text box on the frmZipCodeSelector and have it hidden.

*********************************************************************
Then in the cmdSet button on the frmZipCodeSelector form:

Private Sub cmdSetZip_Click()
    Forms(HiddenCallingFormName)!City = City
    Forms(HiddenCallingFormName)!State = State
    DoCmd.Close acForm, "frmZipCodeSelector", acSaveYes
End Sub
*************************************************************

This will be in the form that calls the frmZipCodeSelector

Private Sub OpenZIPForm()
    DoCmd.OpenForm "frmZipCodeSelector", , , "ZipCode=""" & ZipCode

You got it.