message: added nua for neg particle
diff: @@ -1546,6 +1546,8 @@ void AliAnalysisTaskCMWPU2018::UserExec(Option_t*) {
  fHistv2AchChrgNeg[0][iCent]->Fill(fAchrgNet, (uqRe*sumQxTPCneg + uqIm*sumQyTPCneg)/sumWgtneg, trkWgt);
  + fHFillNUANegPID[cForNUA]->Fill(pVtxZ,trkPhi,trkEta);
  +
  if(trkEta > fEtaGapPos){
  sumQ2xChrgNegEtaPos += trkWgt*uqRe;
  sumQ2yChrgNegEtaPos += trkWgt*uqIm;
  