I had a scene audio but then the heartbeat played in the whole scene.Why are you still using Audiomate, you don't need to.
Use the built-in trigger shown in the wiki post with an audio in "scene audio", setting it to loop.
Here's an example using a VAM embedded sound
If I can have this easier, thats ok for me but I don't understand how I can play the scene audio on p2 head audio only.