diff --git a/LuaLibs/ProcessDrill.lua b/LuaLibs/ProcessDrill.lua
index 2da58bf..9701ea4 100644
--- a/LuaLibs/ProcessDrill.lua
+++ b/LuaLibs/ProcessDrill.lua
@@ -209,7 +209,8 @@ function ProcessDrill.AddPredrillFromDrillProc( Proc)
       PredrillProc.MainId = Proc.MainId
       PredrillProc.IsPredrill = true
       PredrillProc.IsPredrillOf = Proc.Id
-
+      -- recupero l'elenco delle facce della parte interessate dalla feature
+      PredrillProc.AffectedFaces = BL.GetProcessAffectedFaces( PredrillProc)
       return true, PredrillProc
    end
 end