diff --git a/CmdParser.cpp b/CmdParser.cpp
index c86a3bf..88be889 100644
--- a/CmdParser.cpp
+++ b/CmdParser.cpp
@@ -254,6 +254,32 @@ CmdParser::ResetAllVariables( void)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+int
+CmdParser::GetIdParam( const std::string& sParam, bool bNewAllowed)
+{
+   int nVal ;
+  // se nome di identificatore numerico
+   if ( sParam[0] == '$') {
+     // se variabile già definita, ne restituisco il valore
+      if ( GetVariable( sParam, nVal))
+         return nVal ;
+     // se ammessa nuova definizione, provo ad inserirlo
+      else if ( bNewAllowed  &&
+                AddVariable( sParam, CMD_ID_NULL))
+         return CMD_ID_NULL ;
+     // altrimenti errore
+      else
+         return CMD_ID_ERROR ;
+   }
+  // se identificatore numerico
+   else if ( FromString( sParam, nVal))
+      return nVal ;
+  // altrimenti errore
+   else
+      return CMD_ID_ERROR ;
+}
+
 //----------------------------------------------------------------------------
 const string
 CmdParser::GetInitSpaces( void)
diff --git a/CmdParser.h b/CmdParser.h
index 9a84672..5b9d4fb 100644
--- a/CmdParser.h
+++ b/CmdParser.h
@@ -31,6 +31,7 @@ class CmdParser : public ICmdParser
       virtual bool SetVariable( const std::string& sName, int nVal) ;
       virtual bool GetVariable( const std::string& sName, int& nVal) ;
       virtual bool RemoveVariable( const std::string& sName) ;
+      virtual int  GetIdParam( const std::string& sParam, bool bNewAllowed = false) ;
       virtual bool Run( const std::string& sCmdFile, bool bIsolated = true) ;
       virtual bool ExecLine( const std::string& sCmdLine, bool bIsolated = false) ;