Subform control? You mean the combo box?
No, I mean the subformControl.
I have is that I have a sub-form with a zip code combo box on it that also needs to be re-queried on update.
We interpreted this to mean you want to requery a combobox on a subform being called from the main form after you update the rowsource on the main form.
If that is the case, then in the main form you would call it like follows
There are two different things the subform control and the thing inside the subform. Usually they have the same name by default.
For the cascade you have to requery every time. So put the code in the combobox on enter event. That is the easiest. When you go into the subform and enter the control it then requeries itself. That is easier than calling from the main. However to now reference a combobox on the main form from code in the subform you need to use Parent.
from the sub.