[Freeswitch-dev] execute api after conference

I'm trying to figure out how to execute an API command such as a lua script after a user has connected to a conference. for example, an extension is executed and the user is connected to a conference: <action application="conference" data="live@home+flags{moderator}"/> after the user has connected to the conference, i want a lua script to run. is this possible? everything i've tried results in executing the lua script before the user is actually connected to the conference.