APM W3C Local Logging iRule

Hi Kevin - Since we are applying this to an APM VIP, couldn't I just use this under the "when HTTP_REQUEST" or would I have to do something different such as your post here:

[link text](https://devcentral.f5.com/questions/apm-ssl-user-login-logout-logging)

when HTTP_REQUEST {
   set username [ACCESS::session data get session.logon.last.username]
}
when HTTP_RESPONSE {
   set log_msg ""
   append log_msg "username=$username "
   log local0. $log_msg
}