Parameters in WebDynpro ABAP for Gudied Procedure

[Shrestha, Bijay]

Hello,
 
I have written an UI on Webdynpro ABAP. I'm going to make it as a callable object in Guided Procedure. In GP you can define parameters in order to pass from one action to next. However those parameters has to be mapped with Webdynpro ABAP UI parameters.
 
I know I can define parameters in Window controller,  in View etc. For example for URI parameter we do in window controller Inbound plug. I'm not sure which parameter actually GP is looking for in webdynpro ABAP. Could someone please help me on this?
 
Thanks.
Bijay Shrestha