Getting Workitem ID in Webdynpro application

Hi all,

I have created following:

1.workflow with dummy task

2.Reregistration of UWL and XML with Tasks

3.Maintained dummy tasks and WD4ABAP application in SWFVISU

4.A function module that has input parameter as WI_ID(workitem ID)

and WAPI function module for reading,writing and completing WI called in it.

My query is how can I pass Workitem ID to above said function module at the back of WD4ABAP screen(Point no 4).

Am I missing something other than above described points?

I will be thankful for kindly guiding.

Thanks,

SD