Change target on voicedata msg

[Erbj]

Hi,

I'm trying to change the target on voice data message but I can't find where tho.
What I want to do is create another push to talk button that will target another registered voicetargetId instead of the default 0 (Normal talking). Is there a way to do it? If not, Could you give me a hint of where in the code I can change it?

Sorry if it's a dumb question. I already tried to find on my own but I'm still an android beginner.

Thank you a lot, you have done a great work so far!

EDIT:

Sorry I posted the question in the wrong spot.