[Freeswitch-users] how to export variables from b-leg to a-leg?

Hi guys, Freeswitch Rocks! Does anybody know how to export variables from the b-leg to a-leg... I start a bridge from lua on an outgoing gateway and on the answer of the b-leg I would like to set a variable on the a-leg... <action application="export" data="nolocal:execute_on_answer=lua cc.lua extensions_answer ${uuid}"/> <bridge ....> from cc.lua I try: session:execute("export", "foo=123"); but no success... any hint?