I am using two combo boxes to allow the entry of the location of an inventory item. The first combo box uses a query to populate all the building numbers. The second box will then allow the user to select only the rooms that are available from the first combo box selection. Combo box buildings (first combo box) has a requery event on the After Update event so that when the room combo box drop down is clicked it only populates based on the building selected. Currently the setup works, but when an option is selected from the room list, the room combo box defaults back to the first item in the list no matter what option is selected. Any ideas what might be causing this behavior?