Tile transition effect using masks and the caurina library

Hi,

I’m trying to create a tile transition effect by adding masks to the stage and animating them using the caurina library. I can add the tiles to the stage using a for loop but when i try to animate them, nothing is happening.

Here’s my code:
import caurina.transitions.Tweener;

var numCols = Stage.width / 60;
var numRows = Stage.height / 60;
var numTiles = numCols * numRows;

for (var i = 0; i < numTiles; i ++) {
var newTile:MovieClip = this.attachMovie(“box”, “box”, this.getNextHighestDepth());

var currentCol = i % numCols;
var currentRow = int(i / numCols);

newTile._xscale = newTile._yscale = 0;
newTile._alpha = 0;
    newTile._x = (newTile._width / 2) + (newTile._width * currentCol);
    newTile._y = (newTile._height / 2) + (newTile._height * currentRow);

Tweener.addTween(newTile, {delay:currentCol + currentRow) * .05, time:0.5, _xscale:100, _yscale:100, _alpha:100, transition:"easeOutExpo"});

}

Anyone know what i’m doing wrong?