Get a custom c++ event in level blueprint with BlueprintFunctionLibrary class

Hello everyone,

I’m currently trying to use a custom C++ BlueprintImplementableEvent in the level blueprint with a class that extends BlueprintFunctionLibrary. I saw some solutions to that with event dispatchers but they need a target and I can’t have one with my class,

How can I set a custom C++ event for the level blueprint?

Thank you !