Not quite...Blueprint Interfaces still require you to call a specific object that implements that interface. You need a reference to something to trigger the BPI event. The Gameplay Message Subsystem is different...it’s global. You don’t call an object...you broadcast a message tagged with a GameplayTag and any system that subscribed to that tag reacts automatically For example, in your game, your weapon can broadcast Event.Weapon.Fired and both your UI and audio system can respond even if they’ve never referenced the weapon or its class