I would be forever grateful if somecould tell me how to refresh a subform within a subform from another form.

The goal is to to refresh/requery Form C.

Form D is used for Data Entry.
Form C sits inside form B.
Form B Sits inside Form A.

I have tried the following with no luck:



I am also somewhat new to programming and would like to know when to separate codes with '!' and when to separate with '_'

Thanks in advance