It’s similar to UE-20613,
I did this:
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam (FSomething, TArray, InArray);
UPROPERTY (BlueprintAssignable, Category = “BumpCar UDP Messaging”)
finally go to an actor blueprint and add this actor component, then add this event, the result looks quite similar to what happens in UE-20613.