I've tried it and it doesn't work, coincidentally I'm still using Windows 10. But I understand the main steps you explained to apply to my Windows 10. It's just that you still can't, because there is no Indonesian language option. So I can't change SPEECH to Indonesian. And this is strange...why is that (whether from Microsoft or not). Anyway, thanks bro.
what if i do EXACTLY what you describe but it just doesn't work? Everything seems to be set up right but it just won't use German instead of English for speech to text.