[away3d] adding objects at runtime and manipulate them

[Savman]

Hi, i m starting my first project with away3d and as3.
i have some troubles trying to adding objects at runtime to later move
them with mouse.How can i put for example 10 objects(cubes) and click
them later? i have an error

i have the this code:
package
{
        import away3d.cameras.*;
        import away3d.containers.*;
        import away3d.materials.*;
        import away3d.primitives.*;
        import flash.display.*;
        import flash.events.*;
        [SWF(width = "800",height = "600")]
        public class Test1 extends Sprite
        {
                protected var _view:View3D;
                var nume:Number=0;
                public function Test1()
                {
                        _createView();
                        _createScene();
                        _createCamera();
                }
                protected function _createView():void
                {

                        _view = new View3D  ;
                        addChild(_view);
                        _view.x = 400;
                        _view.y = 300;
                        addEventListener(Event.ENTER_FRAME,_onEnterFrame);
                }
                protected function _createScene():void
                {
                        var scene:Scene3D = new Scene3D  ;
                        _view.scene = scene;
                }
                protected function _createCamera():void
                {
                }
                private function armarCubos(){

                        for(var i=0;i<10;i++){
                                var cube:Cube= new Cube()  ;
                                cube.width=20;
                                cube.x = 30*i;
                                cube.material = new WireColorMaterial(0x333333);
                                scene.addChild(cube); /*----ERROR----*/
                        }
                }
                protected function _onEnterFrame(ev:Event):void
                {
                        nume++;
                        if(nume==100){
                                armarCubos();

                        }
                        _view.render();
                }
        }
}

i have this error:
1120: Access of undefined property scene.

thanks