diff --git a/EXE_NstAutoNesting.cpp b/EXE_NstAutoNesting.cpp
index 3de672b..41ba106 100644
--- a/EXE_NstAutoNesting.cpp
+++ b/EXE_NstAutoNesting.cpp
@@ -154,6 +154,15 @@ ExeAutoNestCompute( int nMaxTime)
    return s_pAutoNester->Compute( nMaxTime) ;
 }
 
+//-----------------------------------------------------------------------------
+bool
+ExeAutoNestCancelComputation( void)
+{
+   if ( IsNull( s_pAutoNester))
+      return false ;
+   return s_pAutoNester->CancelComputation() ;
+}
+
 //-----------------------------------------------------------------------------
 bool
 ExeAutoNestGetComputationStatus( int& nStatus)
diff --git a/LUA_Nesting.cpp b/LUA_Nesting.cpp
index 27a4606..06749d6 100644
--- a/LUA_Nesting.cpp
+++ b/LUA_Nesting.cpp
@@ -174,6 +174,19 @@ LuaAutoNestCompute( lua_State* L)
    return 1 ;
 }
 
+//-------------------------------------------------------------------------------
+static int
+LuaAutoNestCancelComputation( lua_State* L)
+{
+  // nessun parametro
+   LuaClearStack( L) ;
+  // lancio interruzione calcolo del nesting
+   bool bOk = ExeAutoNestCancelComputation() ;
+  // restituisco il risultato
+   LuaSetParam( L, bOk) ;
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 static int
 LuaAutoNestGetComputationStatus( lua_State* L)
@@ -268,6 +281,7 @@ LuaInstallNesting( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestAddPart", LuaAutoNestAddPart) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestSetInterpartGap", LuaAutoNestSetInterpartGap) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestCompute", LuaAutoNestCompute) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestCancelComputation", LuaAutoNestCancelComputation) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestGetComputationStatus", LuaAutoNestGetComputationStatus) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestPrintResults", LuaAutoNestPrintResults) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAutoNestGetResults", LuaAutoNestGetResults) ;