diff --git a/LuaLibs/ProcessSimpleScarf.lua b/LuaLibs/ProcessSimpleScarf.lua
index f72bce2..29b42af 100644
--- a/LuaLibs/ProcessSimpleScarf.lua
+++ b/LuaLibs/ProcessSimpleScarf.lua
@@ -31,7 +31,7 @@ end
 -- Classificazione della feature
 function ProcessSimpleScarf.Classify( Proc)
    -- se forzato utilizzo fresa non ruoto la trave
-   local bForceSideMill = EgtGetInfo( Proc.Id, 'Q04', 'd') > 0
+   local bForceSideMill = ( EgtGetInfo( Proc.Id, 'Q04', 'd') or 0) > 0
    -- verifico le normali delle facce
    local nFacetCnt = EgtSurfTmFacetCount( Proc.Id)
    for i = 1, nFacetCnt do
@@ -194,8 +194,8 @@ function ProcessSimpleScarf.Make( Proc, nPhase, nRawId, nPartId, dOvmHead, dOvmT
    if not bOkc then return bOkc, sErrC end
    -- se forzato utilizzo fresa richiamo la freecontour
    local bForceSideMill = EgtGetInfo( Proc.Id, 'Q04', 'd') == 1 or
-                        ( EgtGetInfo( Proc.Id, 'Q04', 'd') == 2 and abs( vtN[vFaceOrd[3]]:getY())) < 0.1 or
-                        ( EgtGetInfo( Proc.Id, 'Q04', 'd') == 3 and abs( vtN[vFaceOrd[3]]:getY())) < 0.1 and vtN[vFaceOrd[3]]:getZ() < 0.1
+                        ( EgtGetInfo( Proc.Id, 'Q04', 'd') == 2 and abs( vtN[vFaceOrd[3]]:getY()) < 0.1) or
+                        ( EgtGetInfo( Proc.Id, 'Q04', 'd') == 3 and abs( vtN[vFaceOrd[3]]:getY()) < 0.1 and vtN[vFaceOrd[3]]:getZ() < 0.1)
    if bForceSideMill then
       bOk, sErr = FreeContour.Make( Proc, nPhase, nRawId, nPartId, dOvmHead)
       return bOk, sErr