MACROMEDIA FLASH 8-ACTIONSCRIPT 2.0 LANGUAGE Reference page 626

Example
The following example demonstrates how to set the
import flash.filters.GradientBevelFilter;
var mc:MovieClip = setUpFilter("qualityExample");
mc.onRelease = function() {
var arr:Array = this.filters;
arr[0].quality = 1; // low quality
this.filters = arr;
}
function setUpFilter(name:String):MovieClip {
var art:MovieClip = this.createEmptyMovieClip(name,
this.getNextHighestDepth());
var w:Number = 150;
var h:Number = 150;
art.beginFill(0xCCCCCC);
art.lineTo(w, 0);
art.lineTo(w, h);
art.lineTo(0, h);
art.lineTo(0, 0);
var colors:Array = [0xFFFFFF, 0xCCCCCC, 0x000000];
var alphas:Array = [1, 0, 1];
var ratios:Array = [0, 128, 255];
var filter:GradientBevelFilter = new GradientBevelFilter(5, 225, colors,
alphas, ratios, 5, 5, 5, 3, "inner", false);
art.filters = new Array(filter);
return art;
}
See also
ratios (GradientBevelFilter.ratios property)
626 ActionScript classes
property on an existing object.
quality