asterisk users - Aug 2010 - How to Record with Konference when it has no record option?

hi,list
      i installed App_Konference in my Asterisk 1.6.2.11.
and i write in dialplan like this:

exten => 95040,n,konference(1234,RVxTH)

it works fine. but I want to record the conference, if use MeetMe , i
can use 'r' option to do this.

but there is no 'r' option in konference , Could you tell me how to do
this?

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Thanks & Regards
Sucan