Is it even possible ? I’m using blueprint interface, and interface message requires a target. If I add self as target it doesnt work. In another blueprint I’m doing something similar but target is get player controller -> get hud , and it works.
It is importat to know that you need referencer a BP ** instance ** generated in runtime.
They have various examples.
https://docs.unrealengine.com/latest/INT/Engine/Blueprints/UserGuide/BlueprintComms/index.html
You have more options like search by name or type when the game start.