С этим проблемы

Код AS1/AS2:
var trapezoid:Shape = new Shape();
var N:Number;
private function onEnterFrame(event:Event):void
{
trapezoid.graphics.clear;
trapezoid.graphics.lineStyle(2, colorx, 1, true, LineScaleMode.NONE, CapsStyle.NONE, JointStyle.ROUND, 3);
trapezoid.graphics.moveTo(5, 2);
trapezoid.graphics.lineTo(10, 7);
trapezoid.graphics.lineTo(15, N);
N+=1;
}