Save button notification

I’m creating a RIA, and one of the buttons in my main movie is a “Save” button. After the user saves their work, the button is disabled. I want to be able to change the “Save” button back to enabled if the user changes anything in any of the components in any of the loaded mcs. Is there a way to do that without making a listener for each component to send a message to the “Save” button??

Thanks!!!