I made a form with the month in a combo box in the header. There are 2 columns ID (Month Number) and Month (Jan, Feb, etc.). I have column 1 bound. On my subform, I have a field called ENTRY_MO, which has a month number in it as well. I set the Master field as MONTH_COMBO and the Child as ENTRY_MO. When I change the selection in the combo box, my data filters, but when I have selected 2/Feb from the combo box, I'm getting ENTRY_MO = 1 in my subform. This works the whole way through. If I select 12 in the combo box, what filters is month 11. How is this possible?