>Barb,
>
>I used Datasource from mytable.dbf with myfield item that contains AA,BB,CC.
>
>datasource or controlsource = mytable.myfield in the form DATA tag of mycombox with rowsourcetype = arrays
>
>Tks

OK, but I'm still not sure if you just want to add the selected item from the combo to the list, or if you want to check if it's there first. Assuming you don't want to check first, in the Valid of the combo, add the item to the array you use as the RecordSource for the list, and then call the listbox's Requery method.