Full Alexa Command List for q90r Soundbar

[Roy-q90r]

Hi,

Does anyone know what the full list of commands are for Alexa on Samsung soundbars? I initially bought the q90r and was very dissapointed it didn't have google assistant integration. Now I have to use Alexa, but I can't even change the input source to HDMI OUT (TV ARC). I can change it to HDM1 or WIFI, etc with "switch input to XXX on soundbar", but would really appreciate if someone could assist providing all possible commands for Alexa as nothing really works. Doesn't seem I can even change sound mode either..

Thanks,

Roy