I've tried using the following formula that I found here in another thread:
@DialogBox( subformname ; [AutoHorzFit] : [AutoVertFit] : [NoCancel] :
[NoNewFields] : [NoFieldUpdate] : [ReadOnly] ; title )
The subform is not opening when this is used. I'm sure part of the problem is that I'm not sure what needs to be entered into the "title" part of the formula.
The form should remain open while the subform is up.
Thanks in advance!