[Freeswitch-users] Have same UUID in all call legs

Good day, the scenario is that I have one a-leg and numerous b-legs for each call in my CDR. I need a simple way of selecting all leg for the same call at once Previously I've relied on things like ${bleg_uuid}, ${last_bridge_to} etc. But it in the end it involves a 2-step process or inner join to put a- and b- legs together. What would really help is if there is a way to have an extra variabvle which will have the same value for every leg of the same call. Can someone tell me if such var already exists, or if I need to generate it myself and export to both a- and b- legs? Thank you,