message: optimize centrality bin, change coding style
diff: // author: Bong-Hwi Lim (bong-hwi.lim@cern.ch)
  // , Beomkyu KIM (kimb@cern.ch)
  //
  -// Last Modified Date: 2019/02/06
  +// Last Modified Date: 2019/03/07
  //
  ////////////////////////////////////////////////////////////////////////////
  @@ -170,9 +170,9 @@ void AliAnalysisTaskXi1530::UserCreateOutputObjects()
  if(!IsMC){
  if (IsAA && !IsHighMult) binCent = AxisFix("Cent",10,0,100); // for AA study
  else if (!IsHighMult) binCent = AxisVar("Cent",{0,1,5,10,15,20,30,40,50,70,100}); // for kINT7 study
  - else binCent = AxisFix("Cent",100,0,0.1); // for HM study.
  + else binCent = AxisVar("Cent",{0,0.01,0.03,0.05,0.07,0.1}); // for HM study
  }
  - else binCent = AxisFix("Cent",1000,0,100); // for MC, including HM/Int7
  + else binCent = AxisVar("Cent",{0,0.01,0.03,0.05,0.07,0.01,1,5,10,15,20,30,40,50,70,100}); // for kINT7 study
  auto binPt = AxisFix("Pt",200,0,20);
  auto binMass = AxisFix("Mass",2000,1.0,3.0);
  