diff --git a/EXE_Exchange.cpp b/EXE_Exchange.cpp
index fd8fde1..723ff63 100644
--- a/EXE_Exchange.cpp
+++ b/EXE_Exchange.cpp
@@ -463,7 +463,7 @@ ExeAdvancedImport( const string& sFilePath, double dToler)
 
 //-----------------------------------------------------------------------------
 bool
-ExeExportDxf( int nId, const string& sFilePath, int nFlag)
+ExeExportDxf( int nId, const string& sFilePath, int nFlag, int nFilter)
 {
    IGeomDB* pGeomDB = GetCurrGeomDB() ;
    VERIFY_GEOMDB( pGeomDB, false)
@@ -473,7 +473,7 @@ ExeExportDxf( int nId, const string& sFilePath, int nFlag)
    PtrOwner<IExportDxf> pExpDxf( MyCreateExportDxf()) ;
    bOk = bOk && ! IsNull( pExpDxf) ;
    // eseguo l'esportazione
-   pExpDxf->SetOptions( EEXFLT_DEFAULT, nFlag) ;
+   pExpDxf->SetOptions( nFilter, nFlag) ;
    bOk = bOk && pExpDxf->Export( pGeomDB, nId, sFilePath) ;
   // se richiesto, salvo il comando Lua equivalente
    if ( IsCmdLog()) {
@@ -489,7 +489,7 @@ ExeExportDxf( int nId, const string& sFilePath, int nFlag)
 
 //-----------------------------------------------------------------------------
 bool
-ExeExportStl( int nId, const string& sFilePath)
+ExeExportStl( int nId, const string& sFilePath, int nFilter)
 {
    IGeomDB* pGeomDB = GetCurrGeomDB() ;
    VERIFY_GEOMDB( pGeomDB, false)
@@ -499,6 +499,7 @@ ExeExportStl( int nId, const string& sFilePath)
    PtrOwner<IExportStl> pExpStl( MyCreateExportStl()) ;
    bOk = bOk && ! IsNull( pExpStl) ;
    // eseguo l'esportazione
+   pExpStl->SetOptions( nFilter) ;
    bOk = bOk && pExpStl->Export( pGeomDB, nId, sFilePath) ;
   // se richiesto, salvo il comando Lua equivalente
    if ( IsCmdLog()) {
@@ -513,7 +514,7 @@ ExeExportStl( int nId, const string& sFilePath)
 
 //-----------------------------------------------------------------------------
 bool
-ExeExport3MF( int nId, const string& sFilePath)
+ExeExport3MF( int nId, const string& sFilePath, int nFilter)
 {
    IGeomDB* pGeomDB = GetCurrGeomDB() ;
    VERIFY_GEOMDB( pGeomDB, false)
@@ -523,6 +524,7 @@ ExeExport3MF( int nId, const string& sFilePath)
    PtrOwner<IExport3MF> pExp3MF( MyCreateExport3MF()) ;
    bOk = bOk && ! IsNull( pExp3MF) ;
    // eseguo l'esportazione
+   pExp3MF->SetOptions( nFilter) ;
    bOk = bOk && pExp3MF->Export( pGeomDB, nId, sFilePath) ;
   // se richiesto, salvo il comando Lua equivalente
    if ( IsCmdLog()) {
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index a68d88e..a456b14 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/LUA_Exchange.cpp b/LUA_Exchange.cpp
index fc45e4f..dc44f12 100644
--- a/LUA_Exchange.cpp
+++ b/LUA_Exchange.cpp
@@ -190,16 +190,18 @@ LuaAdvancedImport( lua_State* L)
 static int
 LuaExportDxf( lua_State* L)
 {
-  // 2 o 3 parametri : GroupId e path del file da esportare [, Flag]
+  // 2, 3 o 4 parametri : GroupId e path del file da esportare [, Flag] [, Filter]
    int nGroupId ;
    LuaCheckParam( L, 1, nGroupId)
    string sFilePath ;
    LuaCheckParam( L, 2, sFilePath)
    int nFlag = EEXFLAG_DEFAULT ;
    LuaGetParam( L, 3, nFlag) ;
+   int nFilter = EEXFLT_DEFAULT ;
+   LuaGetParam( L, 4, nFilter) ;
    LuaClearStack( L) ;
   // creo il file
-   bool bOk = ExeExportDxf( nGroupId, sFilePath, nFlag) ; 
+   bool bOk = ExeExportDxf( nGroupId, sFilePath, nFlag, nFilter) ; 
   // restituisco il risultato
    LuaSetParam( L, bOk) ;
    return 1 ;
@@ -209,11 +211,13 @@ LuaExportDxf( lua_State* L)
 static int
 LuaExportStl( lua_State* L)
 {
-  // 2 parametri : GroupId e path del file da esportare
+  // 2 parametri : GroupId e path del file da esportare [, Filter]
    int nGroupId ;
    LuaCheckParam( L, 1, nGroupId)
    string sFilePath ;
    LuaCheckParam( L, 2, sFilePath)
+   int nFilter = EEXFLT_DEFAULT ;
+   LuaGetParam( L, 3, nFilter) ;
    LuaClearStack( L) ;
   // creo il file
    bool bOk = ExeExportStl( nGroupId, sFilePath) ; 
@@ -226,11 +230,13 @@ LuaExportStl( lua_State* L)
 static int
 LuaExport3MF( lua_State* L)
 {
-  // 2 parametri : GroupId e path del file da esportare
+  // 2 o 3 parametri : GroupId e path del file da esportare [, Filter]
    int nGroupId ;
    LuaCheckParam( L, 1, nGroupId)
    string sFilePath ;
    LuaCheckParam( L, 2, sFilePath)
+   int nFilter = EEXFLT_DEFAULT ;
+   LuaGetParam( L, 3, nFilter) ;
    LuaClearStack( L) ;
   // creo il file
    bool bOk = ExeExport3MF( nGroupId, sFilePath) ;