1180: Call to a possibly undefined method Point

Question

I'm very very new on ActionScript 3.0 development for Blackberry Playbook.

I'm working with Double Sided 3D Plane in FP10 and I'm having troubles with this code:

package
{
    import flash.display.Sprite;
    import flash.events.Event;

    public class FlipCard extends Sprite
    {
        private var myPaperSprite:PaperSprite;

        public function FlipCard()
        {
            super();
        }

        private function Flip():void 
        {
            /*
            Create a new PaperSprite:

            If your front and back faces already exist, you can pass them straight
            into the constructor, like so:

            myPaperSprite = new PaperSprite( myFrontMc, myBackMc );
            */

            myPaperSprite = new PaperSprite();

            /*
            Optionally specify a pivot point, in this example the centre is used
            (this is also the default so there is no need to set this normally).

            To pivot around the top left use:
            myPaperSprite.pivot = new Point(0,0);

            or for bottom right:
            myPaperSprite.pivot = new Point(1,1);

            and so on...
            */

            myPaperSprite.pivot = new Point(0.5,0.5);

line myPaperSprite.pivot = new Point(0.5,0.5); is throwing the following error:

1180: Call to a possibly undefined method Point.

And pivot member is defined as follows:

package
{
    import flash.display.DisplayObject;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.Point;
    import flash.geom.Rectangle;

    public class PaperSprite extends Sprite
    {

        //___________________________________________________________
        //————————————————————————————————————————————— CLASS MEMBERS

        private static const POINT_A:Point = new Point(0,   0);
        private static const POINT_B:Point = new Point(100, 0);
        private static const POINT_C:Point = new Point(0, 100);

        private var _isFrontFacing:Boolean = true;
        private var _autoUpdate:Boolean = true;
        private var _pivot:Point = new Point(0.5,0.5);

        private var _front:DisplayObject;
        private var _back:DisplayObject;

        private var _p1:Point;
        private var _p2:Point;
        private var _p3:Point;

        //___________________________________________________________
        //————————————————————————————————————————— GETTERS + SETTERS

        /**
         * A Point Object used to determine the pivot, or registration point of the 
         * PaperSprite. The values should be between 0 and 1 and are relative to the 
         * dimensions of each face, 0 being far left (on the x axis) or top (y axis) 
         * and 1 being the far right (x axis) or bottom (y axis).
         * 
         * The default value is { x:0.5, y:0.5 } meaning that both faces will pivot
         * around their respective centres
         * 
         * Examples:
         * 
         * To pivot from the centre use: new Point( 0.5, 0.5 );
         * To pivot from the top left use: new Point( 0.0, 0.0 );
         * To Pivot from the bottom right use: new Point( 1.0, 1.0 );
         * 
         */

        public function get pivot():Point
        {
            return _pivot;
        }

        public function set pivot( value:Point ):void
        {
            _pivot = value;
            alignFaces();
        }

Where is the problem? What am I doing wrong?

Answer 1

add import flash.geom.Point to FlipCard.as as well, as it is not visible in that class