NotificationCenter Help Needed

Hi,

Im hoping someone out there who uses the NotificationCenter (http://www.unifycommunity.com/wiki/index.php?title=NotificationCenter) Could possibly give an example of using it?

Ive already put the NotificationCenter.js script into my assets folder

Here's What Im Doing:

I have a bunch of different enemies that will be shooting at my player throughout the game(with different types of bullets taking different health amounts) and I would like to make it so that I can use the NC to easily deduct these amounts from my player and health bar. But Im not sure where to start.

I have a GUI Texture health bar for my character with a script attached (Im guessing this script would have the information for when my player loses health, which I can do but Im not sure how to do it with the NC). And Im guessing inside of this script I would Also have a PostNotification? (NotificationCenter.DefaultCenter().PostNotification(this, "OnBumperCollision"); Guessing I really dont know.

Im also guessing that the enemies bullets would have a ADDObserver? NotificationCenter.DefaultCenter().AddObserver(this, "OnBumperCollision"); Hopefully I dont have these backwards? But Could someone try and clarify this for me?

and also give an example of how to use it with javascript. I think once I see it done I'll be able to implement it elsewhere but not being able to see first hand Im kind of lost :(

I can also add the original scripts if you need, like the bullet script, healthbar script I just didnt want this post to get five miles long andy simple example will do :)