I have some drill-down chart and I would like to integerate them with GWT. 
On the updatechart js function I add: 
 
 var chartObj = getChartFromId("CityDetails"); 
  alert("chartObj:" + chartObj.innerHTML);   
  chartObj.setDataXML("<chart><set label='A' value='10' /><set label='B' value='115' /></chart>");
 
The getChartFromId is working fine and get the chart object (and I alert the innerHTML to check), but the call to setDataXML does not execute and hence the chart not update.