[Freeswitch-users] How to check hangup cause before try next route in mod_lcr

Dear all, I'm testing mod_lcr. i found example in wiki <action application="lcr" data="$1"/> <action application="bridge" data="${lcr_auto_route}"/> If i want to use ${lcr_route_1} and ${lcr_route_2} What's best way to check hangup cause before try lcr_route_2 ? BG Dome C.