Thanks for the info you have provided about how to resolve my issue. I already have extended the jrAbstractChartCustomizer class to achieve different coloring for the different bands in the charts. Anyways, i will try out what you have mentioned. The real issue is that i have to provide a GUI interface as a plugin to allow the user to do this if iReport doesn't already support it. The reason why it has to be a plugin is that i can't expect a customer to manually write a customizer class when he wants to club together some graphs. The issue is actually more generic than the specific scenario which i had mentioned before. I had used an example of bar and line graph clubbed together in the same chart. It could be actually any two types of graph which the user may want to put together. I don't have the manual right now. Our company is in the process of obtaining a commercial license. So getting a manual could take sometime. So if possible send me the small information regarding how to hook that up in the manual. Also, please do send me any code samples of how this can be achieved, if possible. my email id is anup.francis@gmail.com Post edited by: anupfrancis, at: 2006/07/27 12:51