Excellent thanks I knew there would be a simple way that I was missing, just couldn’t get my head into it late on Friday. Thanks Henning * Lewis *   *From:*Henning Westerholt &lt;hw(a)gilawa.com&gt; *Sent:* 28 May 2022 11:13 *To:* Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; *Cc:* Lewis Hutchinson &lt;lewis.hutchinson(a)missionlabs.co.uk&gt; *Subject:* RE: Find Values in User part of Diversion URI   Hello,   for the first question, you could use textops   https://www.kamailio.org/docs/modules/devel/modules/textops.html#textops.f.… <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.kamailio.org%2Fdocs%2Fmodules%2Fdevel%2Fmodules%2Ftextops.html%23textops.f.search_hf&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Cf47cb26808b1498bd55a08da4092b0d9%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7C0%7C637893297062348266%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=QlRI%2FB0nDkQ2azOhiHxAyqCWobDeVm54B%2BMkuATgmXI%3D&reserved=0>   or just cfg regular expression match on the PV together with a transformation   if ($(hdr(Diversion){uri.user}) ~= “…”)   to see if the header field contains the value.   For the second question, there is not function right now that is the opposite of the is.numeric. You could use some regular expression replace transformation for example to achieve a similar result, I think.   Cheers,   Henning   -- Henning Westerholt – https://skalatan.de/blog/ <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.de%2Fblog%2F&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Cf47cb26808b1498bd55a08da4092b0d9%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7C0%7C637893297062348266%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=FNRiwOSNsekorZH6qv8rJDr6v6rqbbKSv3Tk3a0azU0%3D&reserved=0> Kamailio services – https://gilawa.com <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.com%2F&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Cf47cb26808b1498bd55a08da4092b0d9%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7C0%7C637893297062348266%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=oXyFjzn7mNHoa9xHpy8AH%2FuPyKixjalyKQa%2FAVeOLyE%3D&reserved=0>   *From:*sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; *On Behalf Of *Lewis Hutchinson *Sent:* Friday, May 27, 2022 3:53 PM *To:* sr-users(a)lists.kamailio.org *Subject:* [SR-Users] Find Values in User part of Diversion URI   Sorry if this is a super basic ask but I can’t seem to work it out, I have got a work around but for my own sanity wanted to post the question on here.   In *Kamailio Native* *5.5.2* I want to be able to look into this field $(di{uri.user}) and “find” or see if it “contains” a value i.e Diversion: "TEST" sip:112233445566@xxx.xxx.xxx.xxx;user=phone; find 234 or contains 234 I know how to do this in in KEMI Python but for the life of me cant get my head around it in Native. 2ndly is there an opposite to {s.numeric} Removes all non-numeric parts of string. I want the ability to strip all numeric parts. Keep us the good work.     *Lewis *   __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users