Is there a way to pass variable data to a form called with @FormAsDialog()?

I'm looking to make a somewhat fancier version of the Follow-Up Scheduler that will be generic--instead of having to code a popup for each date field, just pass a date to the form and then extract the user-selected date from the return string.  So far the form only uses variables, no fields.  (One of the dialog features is three radio buttons for when the result falls on a weekend--move the date ahead to Monday, back to Friday, or leave it.)  I expect I'll use @Calendar() in some way but haven't decided on the specifics yet.

From what I can tell, I can't just define and set a variable in the calling form (Status) because when the popup form loads it fails to compile because it sees an undefined variable.

I have looked at trying to use FormFieldValue and FormThrowFocus--open the form, set the date on that form, then throw focus to that form. But the Programming Guide says the entire routine will run before it throws focus to the Scheduler form.

It looks like I could create an invisible "Way_Station" form with one (or more) unbound field(s), pass the value(s) to that, then open the Scheduler dialog and have it pull the value(s) from that form.  Once the Scheduler closes, also close the invisible form.  But that is kind of kludgy (if it will work at all). (The reason for the Way Station form is to keep things generic--the Scheduler and other Form-as-Dialog forms don't have to be hard-coded to pull from main forms.)  (An alternative would be a Way Station database with one record.)

Aw, heck!  And I just set up a Way_Station form (didn't code everything related to that approach, though.)

Thanks!