title: crystal report parameter with yallow icon
body: <p>I have build new crystal report by using command choose from <code>database expert</code>
  with parameter passed to this query but the parameter show small yellow icon 
  and the report not showing any data what that cion means ?</p>
  
  <pre><code>SELECT UserList.ID,
         UserList.NUME,
         UserList.NUM,
         UserList.CREATEDON,
         UserList.UPDATEDON,
         UserList.CREATED_DATE
         UserList.UPDATE_DATE
    FROM UserList
  WHERE UserList.ID={?P_PatientID}
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/acqpd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/acqpd.png" alt="yallow icon"></a></p>
  
  <p><a href="https://i.stack.imgur.com/LrJgB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LrJgB.png" alt="enter image description here"></a></p>