A counting problem

I have swf being loaded onto the stage. Currently the count varies because of the getNextHighestDepth. I am trying to get the count to increment by 1, but when I do, and I add a new item replaces the existing item, which I don’t want. How can I get around this?

//_global.count = 0;
function newPiece() {
 // create a movieclip to hold the functionality of the peice of furniture
 // keep all the furniture inside 1 clip (called 'pieceContainer') for organizational purposes
 var count:Number = pieceContainer.getNextHighestDepth();
 var item_mc:MovieClip = pieceContainer.createEmptyMovieClip("item_mc"+count, count);
 // create a container to load the furniture swf into
 var container:MovieClip = item_mc.createEmptyMovieClip("container_mc", 0);
 container._x = 0;
 container._y = 0;
 // setup a MCL to handle the swf's loading, when its loaded, apply the freeTransform methods to it. 
 item_mc.mcl = new MovieClipLoader();
 item_mc.mcl.loadClip("decals/"+this.piece+".swf", container);
var mclListener_2:Object = new Object();
mclListener_2.onLoadInit = function(mc:MovieClip) {
 // set variables to remember the original dimensions
 var axw = mc._width;
 var axh = mc._height;
 // center piece  
 mc._y = -(axh/2);
 mc._x = -(axw/2);
 //add rotation and drag properties 
 mc._parent.onPress = function() {