Use Number type variable in for loop
package{ import flash.display.Sprite; public class Main extends Sprite{ public function Main(){ for (var i:Number = 25; i > 0; i--){ trace(i); } } } } 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1