Event showing up in details tab

I want to have my event showing up in the menu like occurs on this button:

I found this in the ue4 source under ComboBoxString.h so have copied the relevant code:

class DOGFIGHT_API UEventState : public UActorState


	virtual void StateInit(AGActor* owner);
	virtual void StateEnter();
	virtual void StateUpdate(float deltaTime);
	virtual void StateExit();

	// this is only used so we can give the state some usable name to help identify it
	UPROPERTY(EditAnywhere, BlueprintReadWrite)
	FName	Name;

public: // Events

	/** Called when a new item is selected in the combobox. */
	UPROPERTY(BlueprintAssignable, Category = Events)
	FOnOpeningEvent OnSelectionChanged;

Yet it doesnt show up in the details:

anyone got any ideas?

it seems the events require a component, so I am trying to customise the details panel using this article:

not really having any success :frowning:

I think I want to be able to customize the inline properties