Access MainForm dropdown selection in subform

Access MainForm dropdown selection in subform

Hi

I have a lookup in a subform that i want to filter based on a lookup selection in the main form. how to do this?

e.g
Main form i have a dropdown called Customer - based on the customer selected, in subform, i want to show only products pertaining to that customer.
I did a set_filter for the lookup in the subform:
Customer == Main.Customer

This doesn't work. If i hardcode a value,
Customer == "abc"
it filters correctly and shows