def METHOD_NAME(
    self, instrument_code: str, roll_parameters: rollParameters
):
    ## We don't normally allow this, but a special case as we safe modify
    all_parameters = self.get_roll_parameters_all_instruments()
    all_parameters.update_roll_parameters_for_instrument(
        instrument_code, roll_parameters
    )
    all_parameters.write_to_file(self.config_file)
    self.log.warning(
        "*** WRITTEN NEW ROLL PARAMETERS TO %s - copy to /data/futures/csvconfig/rollconfig.csv NOW ***"
        % self.config_file
    )