Question : VFP Thisform.List1.Additem() net works

Why nothing desplayed in List1:
Thisform.List1.Additem("Item")

Answer : VFP Thisform.List1.Additem() net works

FOR lnCounter=1 to ADBOBJECTS(laDBF,'TABLE')
   thisform.List1.additem(laDBF[lnCounter])
ENDFOR