ActionScript 3.0 :: Return ResultEvent Properties Of HTTPServices Inside Class Methods

I currently have my own class, for arguments sake, lets say it's called User and is for logging into my own system.

I would like to call a function from the user class called, say, login(), which would send the username and password attributes to a service (in my case, PHP), and then get the data back with the response (either successful or unsuccessful).

This would ideally make my code behave like this:

Code:
var user1:User = new User("Jim", "password");
var loggedIn:Boolean = user1.login();

[Code]....

I don't know of a way of getting the login function to return a boolean based on the result of the HTTPservice it sends, so does anyone know of a better way of doing this?