From 561df7402a42ef0bcab650a12d398934d3dbd6e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?BiaoZhang=20=28=E5=BC=A0=E5=BD=AA=29?=
 <52267892+zhangbiao-phy@users.noreply.github.com>
Date: Thu, 10 Sep 2026 14:28:09 +0200
Subject: [PATCH] Update mcCollision globalIndex to mcCollisionId

---
 PWGHF/D2H/Tasks/taskD0.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/PWGHF/D2H/Tasks/taskD0.cxx b/PWGHF/D2H/Tasks/taskD0.cxx
index 2ee8b96410b..66d9c90d620 100644
--- a/PWGHF/D2H/Tasks/taskD0.cxx
+++ b/PWGHF/D2H/Tasks/taskD0.cxx
@@ -1320,7 +1320,7 @@ struct HfTaskD0 {
         float cent{-1.f};
         float occ{-1.f};
         if constexpr (std::is_same_v<CollType, CollisionsWithMcLabelsCent>) {
-          const auto& recoCollsPerMcCollCent = collisions.sliceBy(colPerMcCollisionCent, particle.mcCollision().globalIndex());
+          const auto& recoCollsPerMcCollCent = collisions.sliceBy(colPerMcCollisionCent, particle.mcCollisionId());
           for (const auto& recCol : recoCollsPerMcCollCent) {
             maxNumContrib = recCol.numContrib() > maxNumContrib ? recCol.numContrib() : maxNumContrib;
           }
@@ -1331,7 +1331,7 @@ struct HfTaskD0 {
             occ = o2::hf_occupancy::getOccupancyGenColl(recoCollsPerMcCollCent, occEstimator);
           }
         } else {
-          const auto& recoCollsPerMcColl = collisions.sliceBy(colPerMcCollision, particle.mcCollision().globalIndex());
+          const auto& recoCollsPerMcColl = collisions.sliceBy(colPerMcCollision, particle.mcCollisionId());
           for (const auto& recCol : recoCollsPerMcColl) {
             maxNumContrib = recCol.numContrib() > maxNumContrib ? recCol.numContrib() : maxNumContrib;
           }