message: By default use the constructed FemtoDreamv0
diff: @@ -139,6 +139,7 @@ void AliFemtoDreamv0::Setv0(const AliFemtoDreamBasePart &posDaughter,
  this->SetTheta(trackSum.Theta());
  this->Setv0Mass(trackSum.M());
  this->fIsSet = true;
  + this->fUse = true;
  // track IDs
  auto IDpos = posDaughter.GetIDTracks();
  