Hello,
we ran into a trouble with sharing variable into reply route...

We are going to match asterisk's uniqueid with rtpengine records like this:

route[from_asterisk]{
$var(UniqueId)=$hdr(X-UniqueId);
$var(rtp_flags) = $var(rtp_flags) + " label={uid:$var(UniqueId),stream:outgoing} record-call=on";

 rtpengine_manage($var(rtp_flags));
}

it nicely work for outgoing request, but doesn't for reply....

reply_route[from_pstn]{
 rtpengine_manage("replace-origin replace-session-connection ICE=remove RTP/AVP rtcp-mux-demux label={uid:$var(UniqueId),stream:outgoing");
}
and it doesn't work... The one possible way what we found its using $shv instead of $var/$avp... But its unsecure way, cuz it may confus our bussines logic... 

Do you have any idea how to implement this, how we can assign $shv within current call only? 
Many thanks!