Problem in setting the ChartType dynamically in iChart

Hi Experts,

I have an iChart and I want to set only ChartType property dynamically, Applet should refresh and trend that chart like Line,Bar,GroupBar which is selected from drop down....I am trying as follows

document.iChart.getChartObject().setChartType(chartType);

however first time Line chart is trending. If I select Bar its still trending Line chart only...I tried by reloading the applet as well onchange event of chartType dropdown. Any suggestions?

Regards,

Eswaraiah M.