Questions on combining 2 OOP design patterns

Hi there,

I have a question on how to combine 2 OOP design patterns. First off, I created a MVC pattern that loads XML into the as3 classes. Now, I want to add another OOP design pattern which is the OBSERVER pattern. How would I call that in the MVC pattern? Any help would be greatly appreciated.

To be more clear about this, I created a MVC pattern design of a widget that loads the data from the xml file. I want to input a graph bar observer pattern to the widget. How would i do that? Sorry if I’m not clear about this. Thanks in advance.

Sincerely,

theNub