Updatepanel With Setxmlurl

[Echilon]

I have web service which shows chart XML and an updatepanel on my page. I'm trying to add a button click event to find what the users entered in the updatepanel and set the XmlURL for the chart. The problem is, nothing's happening. I even tried with the setXMLData method in Firebug's console, but nothing. My code is:

var statsGraph = new FusionCharts('/Charts/Line2D.swf', 'chartContainer', '400', '300', '0', '1');
statsGraph.setXMLData('<?xml version="1.0" encoding="utf-8"?><chart caption="TMy caption" xAxisName="Date" yAxisName="Follow Count">  <dataset>	<set label="08 January 2011" value="119" />	<set label="09 January 2011" value="118" />  </dataset></chart>');
statsGraph.render('chartContainer');

And I have a div on the page:

<div id="chartContainer"></div>

 

I know the JavaScript fires and no errors are shown. Any ideas?