[Freeswitch-users] about conference play and bgapi

Hello I have two issues. I am writing in Perl. While 2 people are talking in a conference room, the one person want to play the sound. In "Caller-Username", can you get useless. I have tried the above but, Member: it will not become a *** not found.. my $ api_cmd = sprintf ("conference% s play% s% s", $ e-> getHeader ("Conference-Name"), /etc/a.wav, $ e-> getHeader ("Caller-Username")) ; I want to play the above in the background It can not play in the next program. my $ api_cmd = sprintf ("conference% s play% s% s", $ e-> getHeader ("Conference-Name"), /etc/a.wav); $ con-> bgapi ($ api_cmd); Best regards