When I run the code, I can't see any values in the tap panel body. JSON array returns the values but they are not showing under the tab. Please assist, I'm learning. The reason why I'm using textarea is that user must be able to edit.

my code

var res = Ext.util.JSON.decode(response.responseText);
Ext.MessageBox.hide();
soXML.setValue(res['data']);

soXML = new Ext.form.TextArea({
width: 1250,
height: 1000,
bodyPadding: 150,
anchor : '100%'
});
tabPanel = new Ext.TabPanel({
width: 1250,
height: 1200,
bodyStyle:'padding:5px 0 5px 5px',
activateTab: 0,
autoShow : true,
items:[
{title: 'Service Order', id: 'serviceorder',items: [soXML]},