Target one mc from another mc

Hi all,

I am a bit stumped…

I have a movieclip “mc1” with a button inside of it “button1”

I am loading a .swf into a movieclip “mc2” in the movie, I want button1 to tell my loaded .swf’s mc to go to and stop at frame label “home”

heres what i have come up with thanks to tutes:

var loadMc2:Loader = new Loader();
loadMc2.load(new URLRequest("mainContent.swf"));

loadMc2.contentLoaderInfo.addEventListener(Event.COMPLETE, mc2Loaded);
function mc2Loaded(e:Event):void
	trace("mc2 Loaded")


and heres the button:

mc1.button1.addEventListener(MouseEvent.CLICK, button1Clicked);

function button1Clicked(evtObj:MouseEvent){

but i get the following error:

TypeError: Error #1010: A term is undefined and has no properties.
at index_fla::MainTimeline/button1Clicked()

am i seriously missing the point… it feels so… ;(