I am trying to load test ajax appliaction with cas log in. I recored and palyed back the script; I saw user info in log just after recording it and playing back. but as soon as closed jmx and opened and re ran it user info did not get logged. I can not the scrrens..Do I need to write regular expression; how? I tried to create on for SAMLart but does not work.i guess I do know how to use that.. Thanks post data username rejtest%40yahoo.com password test lt _cAA03ADBD-A5E9-A726-3A19-93CCC52F7A71_kCE7B79E9-E548-B1E4-6059-E8867FAEA883 Get after the post in second node: TARGET http%3A%2F%2Fissvmdevh.ibi.com%2FeventRegistration%2Flabs%2FlabRegistration.seam SAMLart AAJ4q%2BUyBkNH6gSbUUfxVtpWchDNEGh0dHBzOi8vbG9jYWxob3N0Ojg0NDM%3D request: GET http://issvmdevh.ibi.com/eventRegistration/labs/labRegistration.seam?TARGET=http%3A%2F%2Fissvmdevh.ibi.com%2FeventRegistration%2Flabs%2FlabRegistration.seam&SAMLart=AAJ4q%2BUyBkNH6gSbUUfxVtpWchDNEGh0dHBzOi8vbG9jYWxob3N0Ojg0NDM%3D I see respose data <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html><head><title>Sun GlassFish Enterprise Server v2.1.1 - Error report</title><style type="text/css"><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - </h1><hr/><p><b>type</b> Exception report</p><p><b>message</b></p><p><b>description</b>The server encountered an internal error () that prevented it from fulfilling this request.</p><p><b>exception</b> <pre>javax.servlet.ServletException: org.jasig.cas.client.validation.TicketValidationException: org.opensaml.SAMLException: ticket 'AAJ4q+UyBkNH6gSbUUfxVtpWchDNEGh0dHBzOi8vbG9jYWxob3N0Ojg0NDM=' not recognized</pre></p><p><b>root cause</b> <pre>org.jasig.cas.client.validation.TicketValidationException: org.opensaml.SAMLException: ticket 'AAJ4q+UyBkNH6gSbUUfxVtpWchDNEGh0dHBzOi8vbG9jYWxob3N0Ojg0NDM=' not recognized</pre></p><p><b>root cause</b> <pre>org.opensaml.SAMLException: ticket 'AAJ4q+UyBkNH6gSbUUfxVtpWchDNEGh0dHBzOi8vbG9jYWxob3N0Ojg0NDM=' not recognized</pre></p><p><b>note</b> <u>The full stack traces of the exception and its root causes are available in the Sun GlassFish Enterprise Server v2.1.1 logs.</u></p><hr/><h3>Sun GlassFish Enterprise Server v2.1.1</h3></body></html>