>i can make the filter but when i try to modifying the combo 2 no take the correct posotion of my data

It's hard to guess, what's wrong. I suggest you to stop using filter and use either Select-SQL (RowSourceType = 3) or cursor RowSourceType = 1 (alias) for your comboboxes. I think Cetin gave an example of using Select-SQL. I usually prefer cursors.