AVL选择屏幕 隐藏

1.对屏幕某个复选框隐藏/不可输入

s_erndn  FOR likp-ernam MODIF ID M1

AT SELECTION-SCREEN OUTPUT.

   LOOP AT SCREEN.
      IF screen-group1 = 'M1'.
        screen-input = 0.
        screen-invisible = 0.
      ENDIF.
      MODIFY SCREEN .
    ENDLOOP.