I need help extending the MovieClip class

Question

I want to add a property to the MovieClip class. I just have a bunch of MovieClips that are placed on the stage by reading an XML file and creating lots of clips according to the information in them. Now, I need to know which MovieClips were created below previous clips, and I figure that the easiest way to do so would be by extending the MovieClip class and add an order property.
I have some problems though: I don't know how to set or get this order property within the main clip, I don't know how to place this clip within my movie, and I don't know how to create them dynamically (do I just do something like var myNewObjectOfExtendedClass : myExtendedClassName = new myExtendedClassName?)
This is the code I have on my extended class, called Expando.as:
class Expando extends MovieClip {
private var _order:Number;
public function get order():Number {
return _order;
public function set order(nOrder:Number):Void {
_order = nOrder;

Answer 1

You mean the Tree component?
My concern with the Tree component (at least the AS2 version) is that I don't see a way to have each node in the Tree have different hit areas with different outcomes.
The tree that I build must have up to 7 levels within each main branch, and not all of them behave the same way. In some branches, clicking the icon next to the label will have a completely different outcome than clicking on the label, which may or may not return a function. Each of those sublevels also need to support different icons, depending on what information is represented by it.
Sample:
• Reminders
My Reminders
Manual Reminders
Escalated Reminders
• Cases
Name Actions < ---- this is where the problem begins. Clicking on the icon where the bullet should be should do something different than clicking on the name, which should do something different than clicking on the word ActionsThis is information about that referral that includes who referred them, the date of the referral, their full address. This information usually takes up 2 lines, sometimes 3
Assignment   <------- you can only open see these leaves if you click on the bullet icon for the previous node; you can't open this by clicking on the text.
Eligibility
Etc., depending on what information has been appended
• Suppliers
Anyway, if the Tree Component can indeed support these features, I'd like to know where to find information about it please
In my search for that information, I concluded that I'd probably be better served by building my own MovieClip that can handle these requirements. I did have a working Tree component pretty quickly as I started this project, but then I got more familiar with the app that I'm building the training for and noticed these requirements.
Of course, maybe all these features are supported by the AS3 Tree component. The problem is that I'm a lot worse with AS3 than I am with AS2 heh.