Daniel-Constantin Mierla writes: > indeed, the right syntax is: > > if ( defined( $(avp(fd.attr)[$var(i)]) ) ) { i added one statement: $(avp(id)[0]) can be written in shorter form as $avp(id) and $avp(s:name) as $name. to http://sip-router.org/wiki/cookbooks/pseudo-variables/devel#avps. hope it clarifies the situation a bit. -- juha