So the button's code below works, but only once. After that, the report generates with or without content in the "UserTitle" field. I really need UserTitle content to be required and notify the user when it isn't.
Private Sub Run_Srch_Click()
Dim stDocName As String
stDocName = "qry_FilterUserReport"
If IsNull([UserTitle]) Then
MsgBox "You must give the report a title."
Cancel = True
Me.UserTitle.SetFocus
Else
DoCmd.OpenReport "rpt UserGeneratedDonRpt", acViewReport
End If
End Sub