i just started working with subforms. i have two combo boxes on it. the first cbo selects a category and filters the parts within the category to the second cbo. when i go to edit the form, the first cbo lists the category i selected, however the second cob does not show the actual until i click it. when i make the first cbo unbound, it populates the second line with the same category selection. if i change the second cbo to unbound, it automatically populates the second line part cbo with the same part name. how do you stop the second line from automatically being filled out when you are filling out the first line?? i can uploaded the db if needed. thanks