[Freeswitch-users] Nibble_total_billed variable missing when using nibblebill on b-leg

I'm doing something similar to the example below in order to bill on the b-leg. Billing is working but the variable nibble_total_billed isn't being set once the call is finished. <action application="bridge" data="${sofia_contact(internal/user@$${domain})},[enable_heartbeat_events=60,nibble_account=1,nibble_rate=0.01]sofia/gateway/blah/1234"/> I see that a few others have experienced this issue (including Jira MODAPP-385) so has anyone found a work-around to coerce this into working? If not, what will it take to get the issue resolved?