I have a main form that has two combo boxes and a subform. When I select a IO number in cbo1 it pulls all the records for that IO number in my subform. I then want cbo2 to look at the vendor number field in the subform (after cbo1 has been selected) and put in the drop list only the vendor names that have vendor numbers listed in the subform. Then when I select a vendor in cbo2, I need the subform to requery with that vendors invoices only. I have had no success in achieving this. Please, please help, any help would be appreciated.