Multiple AutoApps Send mediakey-comands via BT/AVRCP

Hey guys,

I don't know where to ask that question so I decided to start here.
I recently bought a car radio running on Android 6 and have a Android Smartphone running on Android 7 which is connected via BT.
Unfortunately the device (radio) offers no widget for play/pause/next via A2DP / AVRCP so I came up with the idea building one by myself with the help of tasker but I am pretty new to tasker.
So I am looking for an intent (or something like this) which I can use for a tasker widget button on the radio to play/pause the music running on my smartphone (via BT).

It would be also nice to get track information from the phone to that widget but starting with the keys would do it for now.

Thanks in advance and hoping someone could help me

Jim