diff --git a/PWGUD/Tasks/flowCumulantsUpc.cxx b/PWGUD/Tasks/flowCumulantsUpc.cxx
index 52df93c8f24..4b7b11b8106 100644
--- a/PWGUD/Tasks/flowCumulantsUpc.cxx
+++ b/PWGUD/Tasks/flowCumulantsUpc.cxx
@@ -341,10 +341,24 @@ struct FlowCumulantsUpc {
     fGFW->AddRegion("refP", 0.4, maxEta, 1, 1);
     fGFW->AddRegion("refM", -0.4, 0.4, 1, 1);
     fGFW->AddRegion("poiN", minEta, -0.4, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN00", minEta, 0., 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN02", minEta, -0.1, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN04", minEta, -0.2, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN06", minEta, -0.3, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN08", minEta, -0.4, 1 + fPtAxis->GetNbins(), 2);
     fGFW->AddRegion("poiN10", minEta, -0.5, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN12", minEta, -0.6, 1 + fPtAxis->GetNbins(), 2);
+    fGFW->AddRegion("poiN14", minEta, -0.7, 1 + fPtAxis->GetNbins(), 2);
     fGFW->AddRegion("poifull", minEta, maxEta, 1 + fPtAxis->GetNbins(), 2);
     fGFW->AddRegion("olN", minEta, -0.4, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN00", minEta, 0., 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN02", minEta, -0.1, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN04", minEta, -0.2, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN06", minEta, -0.3, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN08", minEta, -0.4, 1 + fPtAxis->GetNbins(), 4);
     fGFW->AddRegion("olN10", minEta, -0.5, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN12", minEta, -0.6, 1 + fPtAxis->GetNbins(), 4);
+    fGFW->AddRegion("olN14", minEta, -0.7, 1 + fPtAxis->GetNbins(), 4);
     fGFW->AddRegion("olfull", minEta, maxEta, 1 + fPtAxis->GetNbins(), 4);
 
     // eta region for MC, can be different from data to study the effect of acceptance
@@ -369,10 +383,24 @@ struct FlowCumulantsUpc {
     fGFWMC->AddRegion("refP", 0.4, maxEta, 1, 1);
     fGFWMC->AddRegion("refM", -0.4, 0.4, 1, 1);
     fGFWMC->AddRegion("poiN", minEta, -0.4, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN00", minEta, 0., 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN02", minEta, -0.1, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN04", minEta, -0.2, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN06", minEta, -0.3, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN08", minEta, -0.4, 1 + fPtAxis->GetNbins(), 2);
     fGFWMC->AddRegion("poiN10", minEta, -0.5, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN12", minEta, -0.6, 1 + fPtAxis->GetNbins(), 2);
+    fGFWMC->AddRegion("poiN14", minEta, -0.7, 1 + fPtAxis->GetNbins(), 2);
     fGFWMC->AddRegion("poifull", minEta, maxEta, 1 + fPtAxis->GetNbins(), 2);
     fGFWMC->AddRegion("olN", minEta, -0.4, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN00", minEta, 0., 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN02", minEta, -0.1, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN04", minEta, -0.2, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN06", minEta, -0.3, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN08", minEta, -0.4, 1 + fPtAxis->GetNbins(), 4);
     fGFWMC->AddRegion("olN10", minEta, -0.5, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN12", minEta, -0.6, 1 + fPtAxis->GetNbins(), 4);
+    fGFWMC->AddRegion("olN14", minEta, -0.7, 1 + fPtAxis->GetNbins(), 4);
     fGFWMC->AddRegion("olfull", minEta, maxEta, 1 + fPtAxis->GetNbins(), 4);
 
     corrconfigs.push_back(fGFW->GetCorrelatorConfig("full {2 -2}", "ChFull22", kFALSE));