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Using setTransform to Change Color and Opacity

By Adrien-Luc Sanders, About.com

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In the Actions Panel, we’re going to define a variable named select whose value (true or false) will determine whether the button is highlighted or not. We’ll use an onClipEvent to set a starting value of the variable when the clip loads:
onClipEvent (load) {
var select=false;
}

We’re starting off with the variable set to false – so the button isn’t highlighted. We could set it to true if we wanted; it doesn’t matter, as long as the value changes when the button’s clicked. And speaking of that…

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