Transcription default language or enable translation

Hi,

How to set the default language for transcription ?
I can do it by run the below console command
APP.conference._room.setLocalParticipantProperty(transcription_language','id-ID');
but i use API to show my jitsi on my web apps.

Can i set default language from server ?
And how to config the translation ? because i have enabling the translation but no automated translation is work.