I'm trying to do hunt groups in ser..

I've come to the conclusion that to do multiple hunt groups I need to call an external script that replies with the next uri to call when it looks at the current one being sent to it.. ie: sent returned 3039930010 3039930006 3039930006 3039930007 3039930007 3039930008 3039930008 3039930006

However on entering the failure route I have found that the current uri is not being updated to reflect the one it has received.. so ser keeps looping on the first 2 numbers in the hunt..

here are my route blocks..

route[2] { log(1, "LOG: entered hunt route"); t_on_failure("2"); exec_dset("/usr/local/ser/huntgroup.pl"); append_branch(); t_relay(); }

failure_route[2] { log(1, "LOG: Hit failure_route 2"); t_on_failure("2"); exec_dset("/usr/local/ser/huntgroup.pl"); append_branch(); t_relay(); }

so on the example above it routes to the first 06 and 07 numbers properly but when I would think 07 would be the uri sent to the perl script an environment check sees that 06 is still being sent as the $SIP_USER

any ideas as to what I need to do?