AS3 Flash | Coding Object have shadow effect

var logo:FlashEssential = new FlashEssential();
var dropShadow:DropShadowFilter = new DropShadowFilter();
logo.filters = [dropShadow];

dropShadow.distance = 1;
dropShadow.alpha = .2;
dropShadow.blurX = 10;
dropShadow.blurY = 10;
addChild(logo);

(correct it later)