Using Grid with Ajax (ActiveWidgets)

I have that function that returns me a consultation of a table and in which I fill out an array (10 rows), in the grid he/she appears me only repeating 10 times the content of the first row.

function parseResults() {
var results = xmlHttp.responseText;

var json = eval("("+results+")");
var itens = null;
var codigocliente = "";
var nome = "";
RowCount=json.itens.length;
myData = new Array(json.itens.length);

for(var i = 0; i < json.itens.length; i++) {
codigocliente = json.itens[i].codigocliente;
nome = json.itens[i].nome;
// myData[i][0] = codigocliente;
myData[i] = nome;
nome=null;
alert(myData[i]);
}

grid.setColumnWidth([600]);
grid.setCellData(myData);
grid.setColumnCount(1);
grid.setRowCount(RowCount);
grid.refresh();
}

Where am I wandering?

And if I wanted to put many fields in the grid as I would do?

Thanks.

I don't need the example more I already managed to do to work, I thank. Hugs