message: disable centrality mode for pPb MC
diff: @@ -385,9 +385,13 @@ AliJEventHeader* AliJFilter::ReadCommonHeader(AliAODEvent *event){
  float fcent = -999;
  // centrality
  - if(fRunTable->IsHeavyIon() || fRunTable->IsPA()){
  + if(fRunTable->IsHeavyIon()){
  AliMultSelection *pms = (AliMultSelection*)event->FindListObject("MultSelection");
  fcent = pms->GetMultiplicityPercentile("V0M");
  + } else if(fRunTable->IsPA()) {
  + //AliMultSelection *pms = (AliMultSelection*)event->FindListObject("MultSelection");
  + //fcent = pms->GetMultiplicityPercentile("ZNA"); // or V0A
  + fcent = -1; // need to check why it doesn\t work for MC here
  } else {
  fcent = -1;
  //cout<<"warning: centrality unavailable";
  