code: def ServicesSetUseDataTimestamp(self, sensor_id, service_id, parameters):
          
          if self.__SenseApiCall__('/sensors/{0}/services/{1}/SetUseDataTimestamp.json'.format(sensor_id, service_id), 'POST', parameters = parameters):
              return True
          else:
              self.__error__ = "api call unsuccessful"
              return False
docs: Indicate whether a math service should use the original timestamps of the incoming data, or let CommonSense timestamp the aggregated data.
              
              @param sensors_id (int) - Sensor id of the sensor the service is connected to.
              @param service_id (int) - Service id of the service for which to set the expression.
              @param parameters (dictonary) - Parameters to set the expression of the math service.
                      @note - http://www.sense-os.nl/85?nodeId=85&selectedId=11887
                      
              @return (bool) - Boolean indicating whether ServicesSetuseDataTimestamp was successful.