Xk03 calling from webdynpro webpage

Hi Experts ,

In my developement im using button to call xk03 transaction.

But for safety purpose from user , while i m Grayout purchase Organisation then Company code values are not populating on screen.

so i want to grayed out purchase organisation and company code , but while i am calling screen from webpage , Purchase organisation and company code values should be visible.and i.e . read only mode.