ActionScript 3.0 :: Controlling Objects In A Loaded Swf At Any Given Time

I want to communicate with an object within a loaded swf. I know I can use this event listener and function to do so right when the swf has completed loading:
 
imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadSections)
function loadSections(event:Event):void        {            event.target.content.mc.y+=2
}
 
But I want to be able to manipulate a given object from the loaded swf at any time not just when the loading is complete. So basically as long as the swf is loaded, is there a way to manipulate objects and call functions within that swf?
 
Both the external and host swf are AS3.