disable the event on right click in an alv grid

hi,

I´m working with an alv_grid. Within this alv I´d like to disable the event On_RIGHT_CLICK.

After looking around I found the method REG_EVENT_RIGHT_CLICK of class CL_GUI_CONTROL to deregister the right click event, but when I tried to use it a runtime error occured.

Can someone explain to me, which exporting paramter I need to disable the event?

kind regards,

Alexander