Creating Token and passing parmaters to openDocument.jsp

Hi All,

I'm using the following code to call the openDocument.jsp to open the crystal report.

But after approx. 20 mins users are getting error: An error has occured. An argument has an invalid value 0.

Logs: com.businessobjects.crystalreports.reportsourcebridge.RSBridgeCMSLogonException: Not a valid logon token. (FWB 00003)

Please advise if the below method is correct createWCAToken and also advise if I need to call releaseToken.

Extract from the code:

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ page import="com.crystaldecisions.sdk.exception.SDKException" %>
<%@ page import="com.crystaldecisions.sdk.framework.CrystalEnterprise" %>
<%@ page import="com.crystaldecisions.sdk.framework.IEnterpriseSession" %>
<%@ page import="com.crystaldecisions.sdk.framework.ISessionMgr" %>
<%@ page import="com.crystaldecisions.sdk.occa.infostore.*"%>
<%@ page import="com.crystaldecisions.sdk.occa.managedreports.*" %>
<%@ page import="com.crystaldecisions.sdk.occa.security.ILogonTokenMgr" %>
<%
ISessionMgr sessionMgr = CrystalEnterprise.getSessionMgr();
IEnterpriseSession es = null;

es = sessionMgr.logon(logonid, logonpass, "bobiserver", "secEnterprise");

ceToken = es.getLogonTokenMgr().createWCAToken("", 100, 100);
URLQueryString = "../BOE/OpenDocument/opendoc/openDocument.jsp?sDocName=" + sDocName + "&sOutputFormat=" + sOutputFormat + paramstr + "&token=" + ceToken;

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%>

Platform: BO4.0 SP2