Index: fact/tools/rootmacros/openFits.c
===================================================================
--- fact/tools/rootmacros/openFits.c	(revision 12511)
+++ fact/tools/rootmacros/openFits.c	(revision 12512)
@@ -65,4 +65,5 @@
 	vector<float> &Gain,
 	vector<float> &TriggerOffset,
+	size_t &TriggerOffsetROI,
 	int VerbosityLevel	
 )
@@ -101,5 +102,5 @@
 	Offset_size = datafile->GetN("BaselineMean");
 	Gain_size = datafile->GetN("GainMean");
-	TriggerOffset_size = datafile->GetN("TiggerOffsetMean");
+	TriggerOffset_size = datafile->GetN("TriggerOffsetMean");
 
   Offset.resize(Offset_size, 0);
@@ -107,4 +108,5 @@
   TriggerOffset.resize(TriggerOffset_size, 0);
 
+	TriggerOffsetROI = (size_t)datafile->GetUInt("NROI");
   datafile->SetVecAddress("BaselineMean", Offset);
   datafile->SetVecAddress("GainMean", Gain);
Index: fact/tools/rootmacros/openFits.h
===================================================================
--- fact/tools/rootmacros/openFits.h	(revision 12511)
+++ fact/tools/rootmacros/openFits.h	(revision 12512)
@@ -22,5 +22,6 @@
   vector<float> &Gain,
   vector<float> &TriggerOffset,
-  int VerbosityLevel
+  size_t &TriggerOffsetROI,
+  int VerbosityLevel =0
 );