SetOrAddKey ( TMovieSceneChannelData< FMovieScene..., FFrameNumber Time, double Value, float ArriveTangent, float LeaveTangent, ERichCurveInterpMode InterpMode, ERichCurveTangentMode TangentMode, FFrameRate FrameRate, ERichCurveTangentWeightMode Weighte..., float ArriveTangentWeight, float LeaveTangentWeight )