Calling a BAPI in Webdynpro which takes no parameter

Hi all,

I am new to WebDynpro, I am trying to implement data access to R/3 with a BAPI. The bapi takes no imports, it consists of a method(Zbapicon) which retrieves the table data, the table data is to be displayed dynamically. And how to change the properties of UI element programmatically (example setting a field readonly, making it mandatory etc). Please post the solution, the appropriate solution is rewarded