diff --git a/EMkMachiningGeoConst.h b/EMkMachiningGeoConst.h
index 30dfed2..c9e2448 100644
--- a/EMkMachiningGeoConst.h
+++ b/EMkMachiningGeoConst.h
@@ -58,8 +58,9 @@ static std::string MCH_PV_DOWN_RCUT = "DRCUT" ;
 static std::string MCH_PV_DOWN_RRCUT = "DRRCUT" ;
 static std::string MCH_PV_DOWN_RLICUT = "DRLICUT" ;
 static std::string MCH_PV_DOWN_RLOCUT = "DRLOCUT" ;
-// Chiave info con WidthT, DeltaT, ExtraCut e RawBottomHeight lama in Preview
+// Chiave info con WidthT, DeltaTi, DeltaT, ExtraCut e RawBottomHeight lama in Preview
 static std::string MCH_PV_KEY_WT = "WT" ;
+static std::string MCH_PV_KEY_DTI = "DTI" ;
 static std::string MCH_PV_KEY_DT = "DT" ;
 static std::string MCH_PV_KEY_EC = "EC" ;
 static std::string MCH_PV_KEY_RBH = "RBH" ;