code: def set_int_attribute(self, target, display_mask, attr, value):
      
      reply = NVCtrlSetAttributeAndGetStatusReplyRequest(display=self.display,
                                                         opcode=self.display.get_extension_major(extname),
                                                         target_id=target.id(),
                                                         target_type=target.type(),
                                                         display_mask=display_mask,
                                                         attr=attr,
                                                         value=value)
      return reply._data.get('flags') != 0
docs: Set the value of an integer attribute