Hello Crescencio.
We are here Keeping with this :-)

- So the filtering is working,but the values selected disappear when you move to the next record in the grid?
Not, the filtering is not working



-What's the bound column for the combobox, and what's the grid's column bound to?
The bound column for the combobox is 1, The column control source is the same for the comboboxes.



-If the filter is working but the values aren't being kept by the grid's bound table/alias, then probably the combobox value is not being saved to the grid's master table.
They are being saved each time the user go to the next record.

Have a nice weekend