setting the value of a text field item in a window

Have a requirement where I need to display a warning symbol, on clicking on this warning symbol a window must popup with an error message, so I must be able to pass the error message from the icon component to the window

I've been using a combination of window.setData, and trying to set the field before render, however it just does not seem to work.

My window looks like this:

DataWindow = Ext.extend(Ext.Window, {





initComponent: function() {

Ext.apply(this, {

errorMsg :'',

modal: true,

width: 600,

height: 500,

text: data,

items: { // Let's put an empty grid in just to illustrate fit layout

xtype: 'label',

border: false

},



});

DataWindow.superclass.initComponent.apply(this, arguments);}

});



Must be able to set the data in the inner xtype: 'label',

i.e set the text property in it with the message which is passed in on clicking the icon.



Approaches,ideas are priceless here

setting the value of a text field item in a window