[Zope] Changing standard realm with SiteAccess2+Zope 2.2.1

I'm trying to change the standard realm with SiteAccess and a External Method. I still get the standard 'Zope' realm, while SiteAccess is pointing to the External Method. What am i doing wrong? Here below the external method i used: import ZPublisher.HTTPResponse def NewRealm(self): ZPublisher.HTTPResponse.HTTPResponse.realm=self.title Alexander Verhaar Website : http://www.atp.nl