ABAP UI--Triggering PAI manually

Sometime, when you work with ABAP OO GUI objects like ALV grid, tree, HTML control, etc, you want to trigger the PAI with a specific OKCODE without any interraction from the user. This is quite simple, you just have to call this small method :* Execute PAI of actual screen to update ALV  CALL METHOD cl_gui_cfw=>set_new_ok_code    EXPORTING      new_code = 'DUMMY'.  "<<==-- Here you put the OKCODE that you want to dispatch

* A flush is required to trigger the refresh   CALL METHOD cl_gui_cfw=>flush.