How to include custom widget into ArcGIS Viewer for Flex Application Builder

Hi All,

I am new to flex development. I have developed a simple widget which shows a map coordinates on map click, using "Source code for Flex Viewer 3.0" in Flash bulder 4.7.

now I would like to include the above widget into ArcGIS Viewer for Flex Application Builder 3.1. When I added it has been added successfully but when I click on widget nothing is shown, where as in flash builder it is working fine.

please suggest me how to resolve this issue.


Thanks,
Uday