security role setting

[David Qiu]

hi,
i put the code as following,
<security-role><role-name>manager</role-name></security-role>
in the web.xml file as to set a role. but when i start the tomcat then, a parse error occors and the output message is, "PARSE error at line XXX column -1
org.xml.sax.SAXParseException: org.apache.crimson.parser/V-036 web-app servlet". and this setting doesn't work as i tested it with req.isUserInRole("manager"). i am very confused by this, for the servlet2.3 spec said it works. anyone helps me out this problem. thanks in advance