Game added on steam does not launch from steam

[RaptaG]

I have the flatpak versions of heroic and steam and after setting the steam path properly in the heroic settings menu and having the game added on steam, it does not launch from steam.

I tried adding "flatpak" in from of the rest of the game command (run ...), it did nothing
Forcing proton experimental did nothing as well.

what should i do?