Google Assistant with a tv controlled by a input_boolean

Hi, all my Tv’s are controlled by Harmony IR. then for easy UI interface and rules, I link them to an input_boolean so I know if my tv is on or of

then I present it to google assistant witch worked great. but now Google assistant is more “clever” and when I ask to open the device Living Room tv, It answer that no tv is configured … Witch is true ! I don’t have any tv/media setup in my google assistant app…

I think I already saw a way to emulate media player but can’t remember where

Thank you !!