message: set period string if not set before for data case
diff: @@ -65,7 +65,7 @@ void GetAlienGlobalProductionVariables(Bool_t & simulation,
  if ( prodType.Contains("MC") ) simulation = kTRUE;
  else simulation = kFALSE;
  - if ( !simulation && period!="" ) period = prodTag;
  + if ( !simulation && period == "" ) period = prodTag;
  // print check on global settings once
  if ( print )
  