fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root");
file = new TFile(fname);
fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02"));
file->Close();
delete file;;
fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root");
file = new TFile(fname);
fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02"));
file->Close();
delete file;;