I have created a jsp rule and add the code as below:

<%   
    String site = new String("http://XXX");
    response.setStatus(response.SC_MOVED_TEMPORARILY);
    response.setHeader("Location", site);
%>

The code has run and display successfully in eclipse.But it has error msg in pega when I save the jsp rule:

response.setStatus(response.SC_MOVED_TEMPORARILY);
^^^^^^^^
response cannot be resolved

Can't I use response object in jsp pega rule?If I have to modify my code and how?