Identify request in post-auth section

Hi, On our eduroam proxy server, we use a virtual server to reject requests with an unknown realm in our federation : authorize {          update request {                &Module-Failure-Message += 'Rejected: Realm unknown in .fr'          }          reject } We would also like to identify these requests in the 'Post-Auth-Type REJECT' of the default virtual server. How can we do this ? Trying to match %{proxy-reply:Module-Failure-Message} doesn't seem to work. Thank's. -- Direction des Services Applicatifs RENATER - Rennes https://www.renater.fr/