Trigger custom event - switching the zones

Hi guys,
I followed the Audio & Blueprints Live Training by Epic (Audio & Blueprints | Live Training | Unreal Engine - YouTube) and build everything what was shown - now I am at the dead end, because I can’t figure it out how to trigger the system.

The Ambience and Music Engine is done, but now in the (in my case) levelblueprint I have to trigger the Trigger Volumes… but how?

This is my current setup - obviously with a lot of gaps and unconnected nodes :smiley:

I know, the last step is quite simple when you know how to do it.You can see the completed graph at [24:27][2]
What have I to do here? I thought connecting the End overlap with the trigger of the next area, because you can enter the areas just in a specific order … but this was wrong :smiley:

I hope you can help me! Thanks :slight_smile: