SetOrAddKey ( TMovieSceneChannelData< FMovieSceneFloatValue >& Curve, FFrameNumber Time, float Value, float ArriveTangent, float LeaveTangent, ERichCurveInterpMode InterpMode, ERichCurveTangentMode TangentMode, FFrameRate FrameRate, ERichCurveTangentWeightMode WeightedMode, float ArriveTangentWeight, float LeaveTangentWeight )