Open a Music-generated radio station in the app?

I've been able to trigger the Apple Music automatically generated playlists (My Chill Mix, New Music Mix, etc.) by triggering them from KM using the Play Playlist trigger.

What I want to do is also choose to play one of my generated Apple Music station streams. Not actual radio, but a genre selection that I created by creating a station from a song. Apple Music provides a URL. So I tried using this in KM. It either opens it in a web browser, or if I choose the Music as the app to open it, it does nothing.

As I have the URL I tried using that with the Apple Music "Open Stream URL" option, but that doesn't do anything.

Is there a way to get this to work?