code: def request_param_update(self, var_id):
          
          self._useV2 = self.cf.platform.get_protocol_version() >= 4
          pk = CRTPPacket()
          pk.set_header(CRTPPort.PARAM, READ_CHANNEL)
          if self._useV2:
              pk.data = struct.pack('<H', var_id)
          else:
              pk.data = struct.pack('<B', var_id)
          logger.debug('Requesting request to update param [%d]', var_id)
          self.request_queue.put(pk)
docs: Place a param update request on the queue