Delete headers

Hi,
 
I need to destroy all the headers of pdf files in a directory. I included COMP:RemoveHeadFoot in the registry but I cant get the menu window poping in the batch script.
 
The function in congig.js : myTrustedMenu = app.trustedFunction( function( name )
{
app.beginPriv();
app.execMenuItem(name);
app.endPriv();
});
 
and my batch file : myTrustedMenu("COMP:RemoveHeadFoot");
 
Thanks for your help )