Depends on how you are storing it in Access I guess.
Use the Selected property to see if the item was selected. Add a listbox, commandbutton, and set the multiselect option in the listbox to test this code.
Private Sub UserForm_Initialize() ListBox1.List = Array(1, 2, 3, 4, 5) End Sub Private Sub CommandButton1_Click() Dim i As Integer For i = 0 To ListBox1.ListCount - 1 Debug.Print i, ListBox1.List(i), ListBox1.Selected(i) Next i Unload Me End Sub