■ 配列要素をソートするには

onClipEvent (load) {
gameScore = [50, 66, 89, 23, 45, 12, 78];
gameScore.sort(function (a, b) { return b-a; });
//gameScore.sort(Array.DESCENDING | Array.NUMERIC); も同じ結果
this.text = gameScore;
}