Westinghouse CW50T9XW to polk command bar, connected to hdmi, no sound

[hellobikash]

I am trying to connect POLK command bar to my westing house CW50T9XW tv. TV has 3 HDMI inputs. I am not able to get sound from soundbar from none of these. the sound bar has 2 HDMI ports and 1 HDMI arc. I used all the combinations. No sound. what am I missing? TV has no Toslink and the soundbar has only HDMI and a Toslink

 

[drivinfast247]

You may have to enable ARC in settings menu.

 

[hellobikash]

You may have to enable ARC in settings menu.

My TV doesnt have ARC. It has just 3 hdmi ports.