From 19454fc7a84073de890204bc53cdbe20d4db3737 Mon Sep 17 00:00:00 2001
From: shahoian <ruben.shahoyan@cern.ch>
Date: Thu, 11 Jan 2024 16:45:45 +0100
Subject: [PATCH] fix propagation of q!=1 tracks with 3D field

---
 .../Reconstruction/src/TrackParametrizationWithError.cxx    | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/DataFormats/Reconstruction/src/TrackParametrizationWithError.cxx b/DataFormats/Reconstruction/src/TrackParametrizationWithError.cxx
index 25d02fdad7006..dc83da48393d8 100644
--- a/DataFormats/Reconstruction/src/TrackParametrizationWithError.cxx
+++ b/DataFormats/Reconstruction/src/TrackParametrizationWithError.cxx
@@ -553,8 +553,8 @@ GPUd() bool TrackParametrizationWithError<value_T>::propagateTo(value_t xk, cons
                                       vecLab[6]};
 
   // Do the helix step
-  value_t sgn = this->getSign();
-  g3helx3(sgn * bb, step, vect);
+  value_t q = this->getCharge();
+  g3helx3(q * bb, step, vect);
 
   // Rotate back to the Global System
   vecLab[0] = cosphi * costet * vect[0] - sinphi * vect[1] + cosphi * sintet * vect[2];
@@ -593,7 +593,7 @@ GPUd() bool TrackParametrizationWithError<value_T>::propagateTo(value_t xk, cons
   this->setZ(z);
   this->setSnp(vecLab[4] * t);
   this->setTgl(vecLab[5] * t);
-  this->setQ2Pt(sgn * t / vecLab[6]);
+  this->setQ2Pt(q * t / vecLab[6]);
 
   return true;
 }