Movieclip inside movieclip

I was wondering if this was possible:
I have a scrollpane and code on frame 1 of my main timeline:


_root.counter = 0;
var i:Number=0; 
var mcMain:MovieClip; 
function init() { 
//empty movie clip in library with linkage name "scrollMovieClip" 
scrollPane.contentPath = "scrollMovieClip"; 
mcMain = scrollPane.content; 
//trace(mcMain); 
} 
init();
scrollPane._visible = false;
textBox._visible = false;
btnClose._visible = false;
backBox._visible = false;
shopPork.onRelease = function() {  
mcMain.attachMovie("pork", "test"+i, mcMain.getNextHighestDepth(),{_y:62*i+5, _x:5}); 
i++; 
scrollPane.invalidate();
_root.counter += 1;
}
} 

but the movieclip I’ve referenced above [COLOR=blue]shopPork[/COLOR] is located inside a movie clip called [COLOR=blue]porkDetai[/COLOR]l and [COLOR=blue]porkDetail[/COLOR] is located inside a movie clip called [COLOR=blue]Print1[/COLOR]. This is the code that is on Frame 1 of the [COLOR=blue]Print 1[/COLOR] movie clip:


var buttonListener:Object = new Object();
buttonListener.change = function(evt:Object) {
 // when the current row changes in the DataGrid, launch a new popup window displaying the product's details.
 myWindow = mx.managers.PopUpManager.createPopUp(_root, mx.containers.Window, true, {title:evt.target.selectedItem.name, contentPath:"ProductForm", closeButton:true});
 // set the dimensions of the popup window.
 myWindow.setSize(340, 210);
 // define a listener which closes the popup window when the close button in the upper right-hand corner is clicked.
 var closeListener:Object = new Object();
 closeListener.click = function(evt) {
  evt.target.deletePopUp();
 };
 myWindow.addEventListener("click", closeListener);
}

Obviously when I run this the shopPork.onRelease function does not work. Is there some way I can get this function to work when the code is on the main timeline and the movieclip is located several layers up? I was thinking something like the reverse of _parent._parent, but I can’t seem to find any info on this. Is this even possible to do? Thank you.