Problem using scriplet object in s:if tag

[ashish chawre]

Hi list,

I am trying to use an object from scriplet to <s:if> tag for a conditional
display purpose.
Here is the code:

In jsp I am fetching user record from the session
<%
      UserDTO userDTO = (UserDTO)session.getAttribute("user");
%>

Now I like to show Logout label only if userDTO is avail
<s:if test="%{#userDto != null}">Logout</s:if>

It doesn't seem to be working out properly. Can anybody please point the
mistake I am doing.

Thanks in advance!

-- Ashish