diff --git a/EXE_GdbCreateVol.cpp b/EXE_GdbCreateVol.cpp
index f60437f..66bb808 100644
--- a/EXE_GdbCreateVol.cpp
+++ b/EXE_GdbCreateVol.cpp
@@ -88,7 +88,7 @@ int ExeCreateVolZmapEmpty( int nParentId, const Point3d& ptIni, double dDimX, do
   // creo lo Zmap nel suo riferimento intrinseco
    PtrOwner<IVolZmap> pVZM( CreateVolZmap()) ;
    bOk = bOk && ! IsNull( pVZM) ;
-   bOk = bOk && pVZM->CreateEmptyMap( ORIG, dDimX, dDimY, dDimZ, dPrec, bTriDex) ;
+   bOk = bOk && pVZM->CreateEmpty( ORIG, dDimX, dDimY, dDimZ, dPrec, bTriDex) ;
   // lo porto nel riferimento locale
    bOk = bOk && pVZM->ToGlob( frBox) ;
   // inserisco lo Zmap nel DB
diff --git a/LUA_GdbModifyVol.cpp b/LUA_GdbModifyVol.cpp
index f749bd9..1dedd66 100644
--- a/LUA_GdbModifyVol.cpp
+++ b/LUA_GdbModifyVol.cpp
@@ -152,7 +152,7 @@ LuaVolZmapSetAdvTool( lua_State* L)
 static int
 LuaVolZmapSetSawTool( lua_State* L)
 {
-  // 7 o 8 parametri : vIds, sToolName, dLen, dDiam, dThick, dStemDiam, dCornR, nFlag
+  // 7 o 8 parametri : vIds, sToolName, dLen, dDiam, dThick, dStemDiam, dCornR [, nFlag]
    INTVECTOR vIds ;
    LuaCheckParam( L, 1, vIds)
    string sToolName ;
@@ -181,7 +181,7 @@ LuaVolZmapSetSawTool( lua_State* L)
 static int
 LuaVolZmapSetGenTool( lua_State* L)
 {
-  // 3 o 4 parametri : vIds, sToolName, ToolSectId, nFlag
+  // 3 o 4 parametri : vIds, sToolName, ToolSectId [, nFlag]
    INTVECTOR vIds ;
    LuaCheckParam( L, 1, vIds)
    string sToolName ;
@@ -202,7 +202,7 @@ LuaVolZmapSetGenTool( lua_State* L)
 static int
 LuaVolZmapSetMortiserTool( lua_State* L)
 {
-  // 6 o 7 parametri : Id, sToolName, dLen, dWidth, dThick, dCornR, nFlag
+  // 6 o 7 parametri : Id, sToolName, dLen, dWidth, dThick, dCornR [, nFlag]
    INTVECTOR vIds ;
    LuaCheckParam( L, 1, vIds)
    string sToolName ;
@@ -229,7 +229,7 @@ LuaVolZmapSetMortiserTool( lua_State* L)
 static int
 LuaVolZmapSetChiselTool( lua_State* L)
 {
-  // 5 o 6 parametri : vIds, sToolName, dLen, dWidth, dThick, nFlag
+  // 5 o 6 parametri : vIds, sToolName, dLen, dWidth, dThick [, nFlag]
    INTVECTOR vIds ;
    LuaCheckParam( L, 1, vIds)
    string sToolName ;
@@ -254,7 +254,7 @@ LuaVolZmapSetChiselTool( lua_State* L)
 static int
 LuaVolZmapSetAdditiveTool( lua_State* L)
 {
-  // 5 o 6 parametri : vIds, sToolName, dLen, dWidth, dThick, nFlag
+  // 5 o 6 parametri : vIds, sToolName, dLen, dDiam, dCornR [, nFlag]
    INTVECTOR vIds ;
    LuaCheckParam( L, 1, vIds)
    string sToolName ;
@@ -268,14 +268,13 @@ LuaVolZmapSetAdditiveTool( lua_State* L)
    int nFlag = 1 ;
    LuaGetParam( L, 6, nFlag) ;
    LuaClearStack( L) ;
-  // imposto scalpello a Zmap indicati
+  // imposto utensile additivo a Zmap indicati
    bool bOk = ExeVolZmapSetAdditiveTool( vIds, sToolName, dLen, dDiam, dCornR, nFlag, true) ;
   // restituisco il risultato
    LuaSetParam( L, bOk) ;
    return 1 ;
 }
 
-
 //----------------------------------------------------------------------------
 static int
 LuaVolZmapResetTool( lua_State* L)