I am trying to play some native files (Pre encoded) using lua script just after call is setup using Bridge (But before any answer). I need to use "Proxy_Media" (Want media to go through freeswitch but no codec translation). I tried using
"bridge_pre_execute_aleg_app" but I do not hear sound files being played (Do not see any error message also). I have already tested lua script in some other test extension and it works fine.

<extension name="main_route">
        <condition field="destination_number" expression="^rb-(.+)$">
                <action application="log" data="INFO progressing call..."/>
                <action application="set" data="proxy_media=true"/>
                <action application="set" data="bridge_pre_execute_aleg_app=lua"/>
                <action application="set" data="bridge_pre_execute_aleg_data=tt.lua ${credit_time}"/>
                <action application="set" data="hangup_after_bridge=true"/>
                <action application="set" data="execute_on_answer=sched_hangup +${credit_time}" />
                 <action application="bridge" data="sofia/$${domain}/${regex(${sip_req_uri}|^kb-(.+)$|%1)};fs_path=sip:${sip_received_ip}:${sip_received_port}"/>
        </condition>
</extension>