Index: trunk/MagicSoft/Mars/manalysis/MHillasCalc.cc
===================================================================
--- trunk/MagicSoft/Mars/manalysis/MHillasCalc.cc	(revision 705)
+++ trunk/MagicSoft/Mars/manalysis/MHillasCalc.cc	(revision 706)
@@ -10,4 +10,5 @@
 
 #include "MHillas.h"
+#include "MCerPhotEvt.h"
 
 #include "MLog.h"
@@ -47,7 +48,11 @@
 Bool_t MHillasCalc::Process()
 {
-    fHillas->Calc(*fGeomCam, *fCerPhotEvt);
-
-    return kTRUE;
+    //
+    // If you want do complex descisions inside the calculations
+    // we must move the calculation code inside this function
+    //
+    // If the calculation wasn't sucessfull skip this event
+    //
+    return fHillas->Calc(*fGeomCam, *fCerPhotEvt) ? kTRUE : kCONTINUE;
 }