<% response.setHeader(\"Cache-Control\",\"no-cache,no-store,must-revalidate\");//HTTP 1.1 response.setHeader(\"Pragma\",\"no-cache\"); //HTTP 1.0 resp
Have you tried response.setHeader("Cache-control","no-store"); response.setHeader("Pragma","no-cache"); response.setDateHeader("Expires", -1);? I think your missing the quotes at the right place..
response.setHeader("Cache-control","no-store"); response.setHeader("Pragma","no-cache"); response.setDateHeader("Expires", -1);