[Serusers] Cannot capture call status in failure route

I have the following logic.

route { ... t_on_reply("1"); t_on_failure("1"); t_relay(); }

onreply_route[1] { xlog("L_NOTICE", "Reply status %rs: Reason %rr\n"); }

failure_route[1] { xlog("L_NOTICE", "Reply status %rs: Reason %rr\n"); if (status=="408") { do something 1 } else if (status=="480") { do something 2 } else if (status=="486") { do something 3 } }

When a reply with 4xx comes in, it first goes through onreply_route[1] and get the result printed to syslog. The message is then passed to failure_route[1]. But it seems that the status code and reason are gone. I get a <null> for both values in the failure route. How should I change the script to get that.

Zeus Ng