From 4befa4eee342d3b330d64cc948012c6dac3bbf2d Mon Sep 17 00:00:00 2001
From: "andrea.villa" <andrea.villa@egalware.com>
Date: Tue, 2 Sep 2025 10:50:11 +0200
Subject: [PATCH] Gestione della funzione EgtSurfTmFacetElevationInClosedSurfTm
 in caso ritorni nil

---
 LuaLibs/ProcessLapJoint.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index 579349a..9b4c6f1 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -6496,7 +6496,10 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
                      nSurfPartId = EgtSurfTmBySewing( nAddGrpId, { nSurfPartId, nTailCutId}, false)
                      EgtErase( nSurfPartIdOld)
                   end
-                  dCustomMaxElev = EgtSurfTmFacetElevationInClosedSurfTm( Proc.Id, nFacInd, nSurfPartId, true) + dCollSic
+                  dCustomMaxElev = EgtSurfTmFacetElevationInClosedSurfTm( Proc.Id, nFacInd, nSurfPartId, true)
+                  if dCustomMaxElev then
+                     dCustomMaxElev = dCustomMaxElev + dCollSic
+                  end
                   EgtErase( nSurfPartId)
                end
             end