I have an Update query that updates tbl_Inven2004 with data from tbl_temp. Once this update is completed I need to change the Status field in tbl_Inven2004 to 'FOUND' if the field ScannerECN in tbl_Inven2004 is no longer null. I have tried, IIf([tbl_Inven2004]![ScannerECN] Is Not Null, [tbl_Inven2004]![Status]='Found', "")in as both criteria and as an expression but it doesn't work. Any ideas? I think I'm coming at this from the wrong angle but I can't seem to find the right one. Thanks