Example 2: Get a the current form and hide a groupbox

MAIN
  DEFINE w ui.Window 
  DEFINE f ui.Form 
  OPEN WINDOW w1 WITH FORM "customer"
  LET w = ui.Window.getCurrent()
  IF w IS NULL THEN 
    EXIT PROGRAM 
  END IF
  LET f = w.getForm()
  MENU "Test"
    COMMAND "hide" CALL f.setElementHidden("gb1",1)
    COMMAND "exit" EXIT MENU
  END MENU
  CLOSE WINDOW w1
END MAIN