>Hello,
>
>myform.scx contains mycombox with a variable to pass to mylistbox,I means
>select 1 item from mycombox and add to mylistbox:
>
>mycombox: with items
>AA
>BB
>CC
>
>and how to add to mylistbox: to have ???
>
>AA
>BB
>CC
>
>TIA
>PP

Do you want to check to see if the selected item is already in the list first? Also, how you add an item to a listbox is determined by what kind of RecordSourceType you've selected. What is the RecordSourceType of the listbox?