I am afraid, you might be using absolute url for the XML path. e.g. "http://www.cdn.mydomain.com/x.xml" . This is blocked by FusionCharts to prevent XSS attacks. Could you please let us know, whether you can use JavaScript (DHTML) in the page? In that case you can use XMLHTTP object from JavaScript to get the XML and update the chart using setDataXML() function.