Laco's Tween

[color=black]Is it possible to change both brightness and contrast of an MC simultaneously using Laco’s tween ? I have two buttons. One changes the contrast (contrastTo), the other changes brightness (brightnessTo). I press the first button to set the contrast of the MC, when I click on the other button to set the brightness, the contrast settings are discarded and the brightness is changed and vice versa. Is there any way to make the MC retain the contrast settings from the first button when I click the second button to change the brightness?[/color]