[SR-Users] passing $avp to t_relay functions.

Hello , is there a way to pass $avp values to t_relay function. i tried ; t_relay t_relay_udp/tcp t_relay_to t_relay_avp functions log 0(75155) ERROR: tm [tm.c:2456]: fixup_t_relay_to(): fixing ($avp(dd), 1) 0(75155) ERROR: tm [tm.c:2459]: fixup_t_relay_to(): param type 8 0(75155) ERROR: tm [tm.c:2456]: fixup_t_relay_to(): fixing ($avp(flags), 2) 0(75155) ERROR: tm [tm.c:2459]: fixup_t_relay_to(): param type 11 0(75155) CRITICAL: tm [tm.c:2549]: fixup_t_relay_to(): invalid flags <$avp(flags)> 0(75155) ERROR: <core> [core/route.c:1154]: fix_actions(): fixing failed (code=-1) at cfg:/usr/local/etc/kamailio/kamailio.cfg:489 0(75155) ERROR: <core> [core/rvalue.c:3860]: fix_rval_expr(): failure in cfg at line: 489 col: 42 0(75155) ERROR: <core> [core/route.c:1154]: fix_actions(): fixing failed (code=-1) at cfg:/usr/local/etc/kamailio/kamailio.cfg:494 0(75155) ERROR: <core> [core/route.c:1154]: fix_actions(): fixing failed (code=-1) at cfg:/usr/local/etc/kamailio/kamailio.cfg:495 in addition i have a look code , in fixup functions try to resolve host values so parameteres cannot find $avp . in conclusion , does kamailio need new function to pass $avp value? Can i try to code? Thanks.