<form method="post" action="<portlet:actionURL/>">
</form>
processAction(){
String str="pp";
actionResponse.setEvent("simple-event",str);}
<supported-processiong-event>
<name>simple-event</name>
</supported-processing-event/>
</portlet>
<event-definition>
<name>simple-event</name>
<value-type>lang.String</value-type>
</event-definition>
processEvent()
{
Event event=request.getEvent();
String str=(String)event.getValue();
}
