From a3bcb43ee80c390dd35fc1f8d37fadce428bbc82 Mon Sep 17 00:00:00 2001
From: Luzhiyongg <71517277+Luzhiyongg@users.noreply.github.com>
Date: Wed, 23 Jul 2025 10:06:30 +0200
Subject: [PATCH] pt container should be initialized after eta region

---
 PWGCF/Flow/Tasks/flowTask.cxx | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/PWGCF/Flow/Tasks/flowTask.cxx b/PWGCF/Flow/Tasks/flowTask.cxx
index 14d93e28935..6e038784277 100644
--- a/PWGCF/Flow/Tasks/flowTask.cxx
+++ b/PWGCF/Flow/Tasks/flowTask.cxx
@@ -352,19 +352,6 @@ struct FlowTask {
     }
     delete oba;
 
-    gfwConfigs.SetCorrs(cfgUserPtVnCorrConfig->GetCorrs());
-    gfwConfigs.SetHeads(cfgUserPtVnCorrConfig->GetHeads());
-    gfwConfigs.SetpTDifs(cfgUserPtVnCorrConfig->GetpTDifs());
-    // Mask 1: vn-[pT], 2: vn-[pT^2], 4: vn-[pT^3]
-    gfwConfigs.SetpTCorrMasks(cfgUserPtVnCorrConfig->GetpTCorrMasks());
-    gfwConfigs.Print();
-    fFCpt->setUseCentralMoments(cfgUseCentralMoments);
-    fFCpt->setUseGapMethod(true);
-    fFCpt->initialise(axisIndependent, cfgMpar, gfwConfigs, cfgNbootstrap);
-    for (auto i = 0; i < gfwConfigs.GetSize(); ++i) {
-      corrconfigsPtVn.push_back(fGFW->GetCorrelatorConfig(gfwConfigs.GetCorrs()[i], gfwConfigs.GetHeads()[i], gfwConfigs.GetpTDifs()[i]));
-    }
-
     // eta region
     fGFW->AddRegion("full", -0.8, 0.8, 1, 1);
     fGFW->AddRegion("refN00", -0.8, 0., 1, 1);   // gap0 negative region
@@ -448,6 +435,19 @@ struct FlowTask {
     }
     fGFW->CreateRegions();
 
+    gfwConfigs.SetCorrs(cfgUserPtVnCorrConfig->GetCorrs());
+    gfwConfigs.SetHeads(cfgUserPtVnCorrConfig->GetHeads());
+    gfwConfigs.SetpTDifs(cfgUserPtVnCorrConfig->GetpTDifs());
+    // Mask 1: vn-[pT], 2: vn-[pT^2], 4: vn-[pT^3]
+    gfwConfigs.SetpTCorrMasks(cfgUserPtVnCorrConfig->GetpTCorrMasks());
+    gfwConfigs.Print();
+    fFCpt->setUseCentralMoments(cfgUseCentralMoments);
+    fFCpt->setUseGapMethod(true);
+    fFCpt->initialise(axisIndependent, cfgMpar, gfwConfigs, cfgNbootstrap);
+    for (auto i = 0; i < gfwConfigs.GetSize(); ++i) {
+      corrconfigsPtVn.push_back(fGFW->GetCorrelatorConfig(gfwConfigs.GetCorrs()[i], gfwConfigs.GetHeads()[i], gfwConfigs.GetpTDifs()[i]));
+    }
+
     if (cfgUseAdditionalEventCut) {
       fMultPVCutLow = new TF1("fMultPVCutLow", "[0]+[1]*x+[2]*x*x+[3]*x*x*x+[4]*x*x*x*x - 3.5*([5]+[6]*x+[7]*x*x+[8]*x*x*x+[9]*x*x*x*x)", 0, 100);
       fMultPVCutLow->SetParameters(3257.29, -121.848, 1.98492, -0.0172128, 6.47528e-05, 154.756, -1.86072, -0.0274713, 0.000633499, -3.37757e-06);