Placing icons and label inside a ToggleButtonBar

Question

As It's explain on subject, I try to create a custom ToggleButtonBar with icon and label on top.
To do that, I create the class you can read below
package
import mx.controls.Button;
import mx.controls.ToggleButtonBar;
import mx.core.IFlexDisplayObject;
public class IconToggleButtonBar extends ToggleButtonBar
[Inspectable (enumeration = "left,right,top,bottom", defaultValue="left")]
public var labelPlacement:String="left";
override protected function createNavItem(label:String, icon:Class=null):IFlexDisplayObject
var b:Button = Button (super.createNavItem(label,icon));
b.labelPlacement= labelPlacement;
return b;
To use this class, I had done:
<fx:Script >
<![CDATA[
[Embed (source= "icon/paramList/archive.png")]
public var icon1:Class ;
private var listeObject:Object={label:"Label1", icon : icon1};
private var actesObject:Object={label:"Label2", icon : icon1};
private var preimpObject:Object={label:"Label3", icon : icon1};
private var amoamcObject:Object={label:"Label4", icon : icon1};
private var agendaObject:Object={label:"Label5", icon : icon1};
[bindable]
public var buttons:Array = [listeObject, actesObject, preimpObject, amoamcObject, agendaObject];
]]>
</fx:Script>
<component:IconToggleButtonBar
dataProvider="{buttons}"
itemClick="changeBbHandler(event)"
includeIn="tout"
selectedIndex="-1"
toggleOnClick="true"
x="7" width="95%"     
color="0xff0000"
height="49"/>
In my case, icon is visible on IconToggleButtonBar but no label appear.
Is anyone can explain to me why?
Thanks for helping

Answer 1

I tried that first. Updating the script to this doesn't work.
myXML.onLoad = function(){
//Set varible to store the XML childNodes
//This allows you to get the number of buttons in the XML file.
//You'll use this tell flash how many times to loop the for loop.
var linkname:Array = this.firstChild.childNodes;
//Set a for loop
for(i=0;i<linkname.length;i++){
//Push the button name into the names Array
names.push(linkname[i].attributes.NAME);
//Push the button link into the links Array
links.push(linkname[i].attributes.LINK);
//Attach the button Movie Clip from the libray give it an instance name and place it on the next highest level
this.attachMovie("button","btn"+i,this.getNextHighestDepth());
//Set the y position of the buttons
this["btn"+(i)]._y = yPosition;
//Increace the varible yPosition 15 pixel each time the loop runs to place each button under each other
yPosition = yPosition + 25
//Place the button name from names Array into the blackTxt text box
this["btn"+(i)].buttonText.Txt.text = (names[i]);
//Assign the btnRelease function to the button onRelease state.
this["btn"+(i)].onRelease = btnRelease;