message: Add method to reset data-driven fraction syst
diff: @@ -56,6 +56,11 @@ class AliHFSystErr : public TNamed
  void ResetTrackEfficErr(Double_t pt, Double_t val){
  fTrackingEff->SetBinContent(fTrackingEff->FindBin(pt),val);
  }
  + void ResetDataDrivenFDErr(Double_t pt, Double_t val){
  + if (fDataDrivenFD) {
  + fDataDrivenFD->SetBinContent(fDataDrivenFD->FindBin(pt),val);
  + }
  + }
  /// Setting the run number
  /// set the two last numbers of the year (is 10 for 2010)
  void SetRunNumber(Int_t number) {
  