Renderer of the game object that this ScoreFlashFollow3D follows. This is very important because it is needed to determine whether the object is actually visible. Like, if it's behind the camera, for instance, you don't want those messages to show in front of you (and they will, if you forget to set this up correctly ;-) ).

public Renderer TargetRenderer { get; set; }

public Renderer TargetRenderer { get; set; }