title: Need to make parameter as Read-Only,
body: <p>In selection-screen, I have one parameter called 'Author' I have called the report using 'Submit' from other report and passed the value to 'Author'. Now I need to make the 'Author' parameter as Read-only. How can I do that? </p>
  
  <p>I used the following code, </p>
  
  <pre><code> LOOP AT SCREEN.
     IF SCREEN-NAME = 'author'.
       SCREEN-INPUT = '0'.
       MODIFY SCREEN.
       EXIT.
     ENDIF.
   ENDLOOP.
  </code></pre>
  
  <p>But it is not working. Can any one help me in resolving this?</p>