Webos google assistant play/pause


I successfully configured webos and can easily play/pause the tv via service call. However I can’t do this via google assistant. Is this a config issue? I’m getting the notification from the assistant that it is not possible. With the kodi integration for instance, I can do this without any issue.

I have exposed the entity and I can see it in the google home app but can only turn of the TV.

Thanks in advanced