Selecting sound source for Yamaha YAS-109 doesn't work with Yamaha Network Receivers

Calling other media_player services like mute, play etc works without a problem but changing source just doesn’t function at all. I tired all possible variations of source names but it doesn’t seem like it’s working at all. Any ideas?
Thank you

Are you using the UI MusicCast integration or the YAML Yamaha integration?

I’m using YAML Yamaha Integration