HI Daniel, ended up using xavp_params_explode. thanks ________________________________ From: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Sent: Thursday, September 28, 2017 7:45:17 AM To: Kamailio (SER) - Development Mailing List; Luis Azedo; sr-dev(a)lists.sip-router.org Subject: Re: [sr-dev] use key dynamic for xavp Hello, iirc, xavp specs do not support variables in their name, it would require some C coding. Getting the value might be possible using pv_evalx(), the result should be string, but then using {s.int} can get it to int. If you need an workaround, you can probably do it with using sqlops with sql_xquery and some temporary tables, but it can look strange in config. Cheers, Daniel On 28.09.17 05:46, Luis Azedo wrote: Hi List, shouldn't this be possible ? $xavp(ulattrs=>first) = 33; $var(ccv) = "whatever"; $xavp(ulattrs[0]=>$var(ccv)) = "some value"; when using in the particular case of usrloc attrs, i see the value of the attr created as "first" (correct) and "$var(ccv)" which i believe is incorrect, it should be "whatever". thoughts ? _______________________________________________ Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.org<mailto:sr-dev@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev -- Daniel-Constantin Mierla www.twitter.com/miconda<http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda> Kamailio Advanced Training - www.asipto.com<http://www.asipto.com> Kamailio World Conference - www.kamailioworld.com<http://www.kamailioworld.com>