To set the Alpha effect on the NormalObject State for an Image object named IntroGraph to glass with a maximum transparency of 100% use the following syntax:
IntroGraph.SetAlpha("Horizontal",0,100)
To set the Alpha effect on the Mouse Over Object State for an Image object named IntroGraph, use the following syntax:
createEffect = IntroGraph.GetAppearance("Mouse Over")
createEffect.SetAlpha("Glass",0,100)
see also:RemoveAlpha and GetAppearance