diff --git a/NPLib/Detectors/Nebula/TNebulaPhysics.h b/NPLib/Detectors/Nebula/TNebulaPhysics.h
index be14226c6b1966f53693ec6f5b50e496267f6e9a..5e1499b8ee42b0a6d6e6bfcecedf0aa364efbd6d 100644
--- a/NPLib/Detectors/Nebula/TNebulaPhysics.h
+++ b/NPLib/Detectors/Nebula/TNebulaPhysics.h
@@ -193,6 +193,9 @@ class TNebulaPhysics : public TObject, public NPL::VDetector {
     double m_Q_Threshold;     //!
     double m_V_Threshold;     //!
 
+  public: 
+    void SetQThreshold(double t) {m_Q_Threshold=t;};
+    void SetVThreshold(double t) {m_V_Threshold=t;};
     // number of detectors
   private:
     int m_NumberOfBars;  //!
@@ -237,7 +240,7 @@ class TNebulaPhysics : public TObject, public NPL::VDetector {
     // spectra getter
   public:
     map<string, TH1*>   GetSpectra(); 
-
+  
     // Static constructor to be passed to the Detector Factory
   public:
     static NPL::VDetector* Construct();
diff --git a/Projects/S034/Calibration/Nebula/gamma.cxx b/Projects/S034/Calibration/Nebula/gamma.cxx
index d8a7d0d647104074b6a93ec8cb09a3cb1ff6fbf5..e1bdeb940b6c5dae418e930f65d6f08a35c672da 100644
--- a/Projects/S034/Calibration/Nebula/gamma.cxx
+++ b/Projects/S034/Calibration/Nebula/gamma.cxx
@@ -3,6 +3,6 @@ void gamma(){
   auto chain = new TChain("PhysicsTree");
   chain->Add("root/analysis/gamma/run418.root");
 
-  chain->Draw("Nebula.Time:Nebula.DetectorNumber>>h(150,0,150,1000,0,150)","","colz");
+  chain->Draw("(Nebula.PosZ+4650)/Nebula.TOF:Nebula.DetectorNumber>>h(150,0,150,2000,0,500)","","colz");
 
   }