AS2: broadcaster / listeners in OOP? (class / class)

I want to know how to make class instances into listeners and broadcasters, from inside each class. Here is what I am trying specifically…

part of the Proj class… (projectiles, as a matter of fact)


private function listen():Void {
     u.register(this);
     **onUpdate** = function(){ 
        step(); // a function I have which makes the projectile move (not shown)
     }
 }

where “u” is another class, the Updater class with this code…

 class Updater {
 
 // const. --- make this a broadcaster
 public function Updater(){
  AsBroadcaster.initialize(this);
 }
 
 // function to add a projectile as a listener 
 // (in this case, called *by *projectiles)
 public function register( p:Proj ):Void {
  addListener( p );
 }
 
 // update all projectiles listening to the updater
 public function updateListeners():Void {
  broadcastMessage("**onUpdate**"); 
 }
}

Problem is, I get a bunch of errors:

[COLOR=darkred]There is no method with the name ‘addListener’.[/COLOR]
[COLOR=darkred]addListener( p );[/COLOR]

[COLOR=darkred]There is no method with the name ‘broadcastMessage’.[/COLOR]
[COLOR=darkred]broadcastMessage(“onUpdate”); [/COLOR]

[COLOR=darkred]There is no property with the name ‘onUpdate’.[/COLOR]
[COLOR=darkred]onUpdate = function(){[/COLOR]

Thanks in advance!

PS: What is the syntax for using AS2 code tags instead of just “[CODE|”?