diff --git a/benchmarks/dvmp/analysis/dvmp.h b/benchmarks/dvmp/analysis/dvmp.h
index 4d95048c1fdc8ba0d8c57b3d5d48a041ed413324..20afc7aa45b1952707ecd3b36b21bb4364e003f9 100644
--- a/benchmarks/dvmp/analysis/dvmp.h
+++ b/benchmarks/dvmp/analysis/dvmp.h
@@ -58,7 +58,7 @@ namespace util {
   }
   
   //import Reconstructed particles and set the wanted particles in the intended order========================
-  inline auto momenta_ordered_rec(const std::vector<eic::ReconstructedParticleData>& parts, std::string_view mother, std::string_view daughter){//mother and daughter are not used yet; will be useful when generater is different and/or when the mcparticles doesn't follow the same order in all events
+  inline auto momenta_ordered_rec(const std::vector<eic::ReconstructedParticleData>& parts, std::string_view mother, std::string_view daughter){
     std::vector<ROOT::Math::PxPyPzMVector> momenta{7};
     //0:e0  1:p0    2:e1    3:p1    4:recoil system (without p1)    5:l1 from recoil decay  6:l2 from recoil decay
     for(int i = 0 ; i < 7 ; i++) momenta[i].SetPxPyPzE(0., 0., 0., 0.);   //initialize as all 0
@@ -79,6 +79,7 @@ namespace util {
     
     //search for di-lepton pair for the decay in recoil
     int daughter_pid = -1;    //unsigned
+    cout<<"_daughter_ = "<<daughter<<endl;
     if(daughter == "electron"){
       daughter_pid = 11;
     }else if(daughter == "muon"){