LoadVars inside class - how?

How can I use LoadVars inside a class?
I mean, if I assign the method name to onLoad of LoadVars, the method will be override, and will not pertence to my class.
look this:

[AS]
class myClass{
var lv:LoadVars;
function myClass(){
lv = new LoadVars();
lv.onLoad = onLoad;
}
function onLoad(sucess:Boolean):Void{
trace(this);
}
function trigger(){
lv.sendAndLoad(“testeURL”,lv,“POST”);
}
}
[/AS]
this at onLoad function points to loadVars not to myClass.

the only solution I found to this was to myClass extends LoadVars, but it limit me since AS 2 does not support multiple-Inheritance.

I think I will face the same problem with all others components that does not has addEventListener capabilitie.:red: :red: