[OpenSER-Users] when are AVPs in radius extra evaluated?

if i put in radius_extra "Some-Known-Attribute=$avp(s:bar)" and in onreply_route if (is_method("INVITE") && t_check_status("200")) { xlog("L_INFO", "Setting <s:bar> to <test>\n"); $avp(s:bar) = "test"; }; i do not get Some-Known-Attribute = "test" to accounting Start request although i do get Mar 12 07:20:32 rautu /usr/sbin/openser[7440]: Setting <s:bar> to <test> in syslog. i didn't find from acc/README information on when the AVPs in radius_extra are evaluated. accounting Start is sent out AFTER final response (200 ok) had been received, because it contains SIP-Response-Code = 200 why doesn't setting $avp(s:bar) in onreply_route cause Some-Known-Attribute to be included in accounting start record? -- juha