How to create a Image object from action script

Question

I need to set the back ground of charting dynamically, thus I need to create Image from a png/gif files. I have wrritten following code, but doesn't work.
public function addBackground():void
    var cbg:ChartBackground=new ChartBackground();
    var bgs:Array=new Array();
    bgs.push(cbg);
    lineChart.backgroundElements=bgs;     
package arubaUI
    import mx.controls.Image;
    [Embed(source="../assets/chart_16.png")]   
    public class ChartBackground extends Image
Does any one knows how to do that?
Thanks!

Answer 1

I put the code like and got compile error:
public class ArubaLinePanel extends Panel
  private var lineChart:LineChart;
  private var lineData:ArrayCollection=new ArrayCollection( [
            { Month: "Jan", Profit: 2000, Expenses: 1500, Amount: 450 },
            { Month: "Feb", Profit: 1000, Expenses: 200, Amount: 600 },
            { Month: "Mar", Profit: 1500, Expenses: 500, Amount: 300 },
            { Month: "Apr", Profit: 1800, Expenses: 1200, Amount: 900 },
            { Month: "May", Profit: 2400, Expenses: 575, Amount: 500 } ]);
  public function ArubaLinePanel()
        super();           
        lineChart=new LineChart();
        lineChart.dataProvider=lineData;
        lineChart.showDataTips=true;
        var axisX:CategoryAxis=new CategoryAxis()
        axisX.categoryField="Month";
        lineChart.horizontalAxis=axisX;
        var seriesArray:Array = new Array();
        var ls:LineSeries=new LineSeries();
        ls.yField="Profit";
        ls.displayName="Profit";
        seriesArray.push(ls);
        lineChart.series=seriesArray;
        this.addChild(lineChart);
        var legend:Legend=new Legend();
        legend.dataProvider=lineChart;
        this.addChild(legend);       
        addBackground();
public function addBackground():void
    var cbg:ChartBackground=new ChartBackground();
    var bgs:Array=new Array();
    bgs.push(cbg);
    lineChart.backgroundElements=bgs;     
Another method I tried:
package arubaUI
    import mx.controls.Image;
    [Embed(source="../assets/chart_16.png")]   
    public class ChartBackground extends Image
There is no compile error, but image is not show on screen,
Thanks!
April