Hi List, FreeSWITCH newbie here again. I am trying to cobble togther a lua callback script, my first attempt was successful, but I am trying to make it slightly more elegant. I don't see any errors when I try to run this but the callback isnt happening. This is my very second attempt trying to write in lua, so I would be very grateful for any help. The user is expected to dial in, have the call hangup and FreeSWITCH call back. I'm passing a modified $effective_caller_id_number and $destination_number to the lua script: <extension name="callyouback"> <condition field="${caller_id_number}" expression="^1(\d{10})$"require-nested="false"> <action application="set" data="effective_caller_id_number=+234${1}"/> <action application="set" data="effective_caller_id_name=+234${1}"/> </condition> <condition field="destination_number" expression="^012345(6)(7)$"> <action application="set" data="destination_number=+12312345${1}${2}" /> <action application="lua" data="callback.lua ${effective_caller_id_number} ${destination_number}"/> <action application="gentones" data="%(3000,0,430,450,550)"/> <action application="hangup" data="NORMAL_CLEARING"/> </condition> The script itself: api = freeswitch.API(); call_string = "bagpi originate {origination_caller_id_name="..caller_id_name..",origination_caller_id_number="..caller_id_number.."}sofia/gateway/mysipgate/"..number_to_call.."" freeswitch.msleep(5000); if (session:ready()) then caller_id_number = session:getVariable("destination_number"); caller_id_name = session:getVariable("destination_number"); number_to_call = session:getVariable("effective_caller_id_number"); api:executeString(call_string); freeswitch.msleep(2000); session:streamFile("/tmp/get_off_my_lawn.wav"); session:hangup("NORMAL_CLEARING"); end