Hello list, I have 2 avps containing a username ($avp(s:usr))and a domain ($avp(s:domain)) retrieved from db and I would like to build an uri by joining this 2 avps with an '@' in the middle. I have checked avp_subst and avp_printf but it doesn't work as, for what I have understood, they only accept pseudo variables (and not other avps) for the replacement. For example, avp_printf("$avp(s:uri)", "$avp(s:usr)@$avp(s:domain)") is not valid. Is there a (simple) way to achieve what I want (I am using version 1.1.0-notls) ? Thank you, -vma .