Populating dynamic textfield question

1

so, I’ve got the following in an .as Class file called PIX, there is another .as Class file for the Sprite object ‘px’ that contains a dynamic textfield called pxText I’m trying to populate with the value of the variable ‘j’.
here’s the code I got to work:

public function init():void {
     pxRow = stage.stageWidth / 10;	
	for(var j:uint = 0; j < pxRow; j++) {
		px = new Pixie();
		addChild(px);
		px.x = j*10;
		px.y = 0;
		trace(j);
		px.pxText.text = ""+j;
	}

but when I try this (which is really what I want to do):

px.pxText.text = j;

I get Error #1067
how do I simply display the value of the variable ‘j’?
I’ve tried

px.pxText.text = j as String;

px.pxText.text = j as text;

px.pxText.text = [j];

none of them have worked…
the trace(j) statement works so it’s not any kind of problem with the variable itself. I’m sure there’s a simple answer but I’ll be ■■■■■■ if I can see it right this minute…
thanks in advance.
bvb