linked subforms on same Tab page

[Guest]

I linked 2 subforms on a Tab page - they work, but a Parameter box pops
asking for the Child link field -
Forms![MainTabtest]![PgmList].Form.ProgramID.

First subform is continous row form, with onCurrent event set to requery
linked Child form to the above selected row.

Once I say ok to parameter box, the correct data shows based on row selected
in Parent form.

any idea why the parameter box and how to eliminate?

thx!

 

[Guest]

I figured out - needed a ! (exclamation) before ProgramID. The link worked
without, but got a Parameter box.