[Freeswitch-users] mod_conference - 2-digit DTMF and events

I have set up a custom caller-controls group in the my conference.conf.xml, as follows <caller-controls> <group name="mick"> <control action="event" digits="#1"/> <control action="event" digits="#2"/> <control action="event" digits="#3"/> <control action="mute" digits="#6"/> </group> </caller-controls> I have a lua script running to detect these events and perform actions according to which digits it receives. However, unless I press both the 2nd digit very quickly after the first one the event is not raised Is there any way of tuning the inter digit delay for caller-control groups so that multi-digit DTMF sequences are handled correctly?