You can only use fields from the primary data source as filter fields.
Looks like you are trying to use fields from the secondary source. (Product Line? Or Product Name?)
In the attached I changed the filter to use Feature Reference#, and that works. It may not be what you want, but it demonstrates how filter actions work.
Actually, as it is set up, if you click on "Test-GE Digital" on the Quarter sheet, it grabs all the Feature Reference # values and passes them. You might still get the behavior you want this way.
Test Data _v10.4.twbx 199.1 KB