[Freeswitch-users] Heartbeat question

Hi everyone, I have a question about FreeSWITCH heartbeat, I have this on my dialplan: <extension name="test"> <condition field="destination_number" expression="^8084$"> <action application="answer"/> <action application="enable_heartbeat" data="1"/> </condition> </extension> But when I do "event plain all" I see the heartbeats are being fired every 20 seconds... what I'm doing wrong? Thanks, Diego