Correction needed for multi-event/run.

diff --git a/TFluka/source.cxx b/TFluka/source.cxx
index a9fb962a0e70df03da4b6a5ad3e8cc0b5e67c793..9d39f94af0141c073ae441ad8a0db532b4698335 100644 (file)
--- a/TFluka/source.cxx
+++ b/TFluka/source.cxx
@@ -79,6 +79,7 @@ extern "C" {
     static Bool_t lastParticleWasPrimary = true;
 
     nomore = 0;
+
     
 //  Get the stack 
     TVirtualMCStack* cppstack = fluka->GetStack();
@@ -89,7 +90,7 @@ extern "C" {
 //  Get the next particle from the stack
     particle  = cppstack->PopNextTrack(itrack);
     fluka->SetTrackIsNew(kTRUE);
-
+    if (itrack == 0) lfirst = true;
 //  Is this a secondary not handled by Fluka, i.e. a particle added by user action ?
     lastParticleWasPrimary = particleIsPrimary;