Add row in a blanck grid

Assuming this code:

var myData = []; //my model
var myColumns = ["Ticker", "Company Name", "Market Cap.", "$ Sales"];
var obj = new AW.UI.Grid;
obj.setCellText(myData);//i bind my model to my grid
document.write(obj); //Generate the grid - empty

//As you can see i'm trying to add a row in the empty grid
myData["666"] = ["ERTS", "Electronic Arts", "14,490.895", "2,503.727"];
obj.addRow("666");
//adding or removing this line does not help
obj.setCellText(myData);

The result is that is impossible to add a row then...

It does not seem logical that if the model is empty and the grid already generated that updatding the model does not impact the grid

Thanks

I have run across the exact same problem. Has anyone found a good way to code around this?