Correction for neg. z

diff --git a/STEER/STEER/AliLego.cxx b/STEER/STEER/AliLego.cxx
index 5e5e53563ec6418279bf06ddaf13217498cf8920..9e1c6265a32412743c22f1f6e3bcacfcf2c352b3 100644 (file)
--- a/STEER/STEER/AliLego.cxx
+++ b/STEER/STEER/AliLego.cxx
@@ -305,7 +305,7 @@ void AliLego::StepManager()
     // Normal Forward stepping
     //
        if (fDebug) {
-      //         printf("\n steps fwd %d %s %d %f", fStepsForward, vol, fErrorCondition, step);          
+//         printf("\n steps fwd %d %s %d %f", fStepsForward, vol, fErrorCondition, step);        
       
       //
       // store volume if different from previous
@@ -332,9 +332,9 @@ void AliLego::StepManager()
 
        
        if (z < 1) return;
-       
+
        // --- See if we have to stop now
-       if (TMath::Abs(pos[2]) > fGener->ZMax()  || 
+       if (TMath::Abs(pos[2]) > TMath::Abs(fGener->ZMax())  || 
            pos[0]*pos[0] +pos[1]*pos[1] > fGener->RadMax()*fGener->RadMax()) {
            if (!gMC->IsNewTrack()) {
                // Not the first step, add past contribution