Want to add customized action in Display Pane

Hi @Vaibhav_Thakare 

Not supported does not always means you can not do it. 

Here you can find a way how to add a action for reporting

Report Selection List Customization

Here is example how to use own processor

How-to-add-a-custom-action-to-Windchill-PSB

Here is a thread where you can read what is possible

How-to-create-an-action-on-GWT-action-model-without-jsp

Also function name in XML Action.xml definition has to contains suffix string GWT do not forget it. 

PS> for more information generally search for GWT Customization (Google Web Toolkit)

PetrH