in mod_nibblebill wiki page
but if I have this in my dialplan
 
    <extension name="conference">
        <condition field="destination_number" expression="^conference$">
                <action application="export" data="nolocal:nibble_account=${dest_nibble_account}"/>
                <action application="export" data="nolocal:nibble_rate=0.03"/>
                <action application="sleep" data="3000"/>
                <action application="answer"/>
                <!-- <action application="speak" data="cepstral|cepstral|connecting your call to the conference"/> -->
                <action application="conference" data="${dest_nibble_account}-$${domain}@default+${dest_conf_pin}"/>
        </condition>
    </extension>
 
it doesn't work
 
----- Original Message -----
From: Madovsky
To: freeswitch-users@lists.freeswitch.org
Sent: Monday, January 03, 2011 2:21 PM
Subject: mode_nibblebill and mod_conference

Is nibblebill works with conference ?
I tried to set nibble_account and nibble_rate without success
 
Thanks