Hello, if you want to use "selects" you need to use the proper PV: http://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#sel_name_-_sel… If you just want to access the Via header, you can also simply use $hdr(Via): http://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#hdr_name_-_hea… Cheers, Henning -- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://gilawa.com<https://gilawa.com/> From: sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; On Behalf Of Adarsh Chauhan Sent: Friday, January 14, 2022 2:02 AM To: Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; Subject: [SR-Users] Retrieve last via IP from SIP MEssage Hi All, I have tried couple of methods to retrieve last via IP of SIP message but failed to retrieve it, trying to retrieve the source - @hf_value.via[-1].host, it simply prints the exact text back @hf_value.via[-1].host - $sel((a)hf_value.via[-1]) it doest give the IP but the entire via value SIP/2.0/TCP 172.31.30.144;branch=z9hG4bKf8bd.753341d2000000000000000000000000.0.host @via[-1].host it also simply prints the exact text back @via[-1].host Regards, Adarsh Chauha