diff --git a/Machining.cpp b/Machining.cpp
index 234e551..dca2462 100644
--- a/Machining.cpp
+++ b/Machining.cpp
@@ -401,6 +401,7 @@ Machining::ActivateDrillingUnit( int nHeadId, const INTVECTOR& vActExit) const
       return false ;
   // costanti
    static const string EMC_VAR = "EMC" ;              // tabella variabili locali per calcolo
+   static const string EVAR_VER = ".VER" ;            // IN  (string) versione della Dll
    static const string EVAR_HEADID = ".HEADID" ;      // IN  (int)    identificativo testa
    static const string EVAR_DRACEX = ".DRACEX" ;      // IN  (ints)   vettore indici uscite attive
    static const string EVAR_ERROR = ".ERR" ;          // OUT (int)    codice di errore ( 0 = ok, > 0 errore)
@@ -415,6 +416,7 @@ Machining::ActivateDrillingUnit( int nHeadId, const INTVECTOR& vActExit) const
    int nErr = 99 ;
   // imposto valori parametri
    bOk = bOk && pMch->LuaCreateGlobTable( EMC_VAR) ;
+   bOk = bOk && pMch->LuaSetGlobVar( EMC_VAR + EVAR_VER, GetEMkVer()) ;
    bOk = bOk && pMch->LuaSetGlobVar( EMC_VAR + EVAR_HEADID, nHeadId) ;
    bOk = bOk && pMch->LuaSetGlobVar( EMC_VAR + EVAR_DRACEX, vActExit) ;
   // eseguo