Code:
package {

        import flash.display.*;
        import flash.events.*;
        import MMES.Common;

        public class Main extends Sprite {

                public function Main() {
                        var correct = 10;
                        var count = 10;
                        var mmes:Common = new Common();
                        letterGrade.text = mmes.letterScore(mmes.numericScore(correct,count));
                }
        }
}