Using Wwise + switch containers for Ambiences help

Hey everyone,

I’m trying to use a Wwise switch container to control my ambiences in a UE4 project I’m working on.

It works in Wwise no problem and if I set up a start all ambiences node with a switch node, the ambience switches over

but when it comes to using a trigger box, I can’t get it to work at all. When the character walks through the box, everything seems to trigger fine but nothing changes. I must be missing a way to reference the event properly of something.

Any help would be amazing!