Change Data Provider Based on ComboBox Selection

Question

Complete noob using Flash CS5 for Macs. I have a ComboBox component and a TileList. I want the ComboBox selection to change the data provider for the TileList. I've used a sample script from the Adobe website at the bottom, but it is not working in this context. Google returns no better examples. Can anyone point me in the right direction?
import fl.controls.ComboBox;
import fl.data.DataProvider;
import flash.display.DisplayObject;
import flash.display.MovieClip;
import fl.events.DataChangeEvent;
// Combo Box ("aCb")
var aCb:ComboBox = aCb;
var Choices:Array = new Array(
    {label:"Artist Resin", data: "resin"},
    {label:"Ceramic", data: "ceramic"}
aCb.dataProvider = new DataProvider(Choices);
// TileList ("aTl")
aTl.columnWidth = 110;
aTl.rowHeight = 130;
aTl.setSize(110,150);
aTl.move(20, 150);
aTl.setStyle("contentPadding", 5);
// TileList Content
var i:uint = 0;
var resinitems:Array = [
{label: "Image 1", source: "http://www.helpexamples.com/images/montreal/images/IMG_5057.jpg"},
{label: "Image 2", source: "http://www.helpexamples.com/flash/images/gallery2/images/IMG_1592.jpg"}];
var resin:DataProvider = new DataProvider();
for(i=0; i < resinitems.length; i++) {}
var ceramicitems:Array = [
{label: "Image 3", source: "http://www.helpexamples.com/flash/images/gallery1/images/pic11.jpg"},
{label: "Image 4", source: "http://www.helpexamples.com/flash/images/gallery1/images/pic14.jpg"},];
var ceramic:DataProvider = new DataProvider();
for(i=0; i < ceramicitems.length; i++) {}
addChild(aCb);
addChild(aTl); 
// Code to Change Data Provider for Tile List
aCb.addEventListener(Event.CHANGE, changedataProvider);
function changedataProvider(event:Event):void {
    aTl.dataProvider = event.target.selectedItem.data;

Answer 1

Thanks for your answers.
I have already checked those links.
Now th problem what I am facing is,
I am not able to call the function ChangeLanguage through javascript.
I have created a dropdwon using Hovermenu and added English and German.
Now when I click on these the function should be called.
Please help me in getting how setClientSideScript() can be used to call a function.
or any other way to call the function after clicking on Hovermenu Item.
Thanks in advance,
Sumangala