[Freeswitch-users] list conference name?

Hi, I have a web +voice conferencing and trying below $list=$api->executeString("conference <conf_name> list"); What determines the conference name? is it voicebridge number or meeting id or attendee PIN or moderator PIN I am unable to determine conference name and list it accordingly (performed many trials) is there any way to get the conference name by a command like above? what is the best way to get the conference name and list it and execute accordingly thx deniro--