Use Google Assistant to Launch 3rd Party Music Player

I have Pulsar+ as my music player on my Pixel 3xl. I've tried to setup Google Assistant (even tried Routines) to launch Pulsar+ to play my locally stored MP3 music. I can't seem to do it. Has anyone else had success in setting Google Assistant to launch a 3rd party music app on an Android phone (to play locally stored music?

Thanks.

What does Google assistant do when you try to launch them ? I'll leave a link to register so you can communicate here , as a guest account you can't.https://forums.androidcentral.com/sh...d.php?t=409154