Blackboard key drop box not showing in behavior tree after using C++?

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#1

Link to the image:

[Album] Imgur

I’m at the portion where we are trying to make the ChooseNextWaypoint in C++, not using blueprints, and I’ve entered
protected:
UPROPERTY(EditAnywhere, Category = “Blackboard”)
struct FBlackboardKeySelector Index;

and the drop box isn’t showing in UE4. Any suggestions?

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