I have developed little application using Flex 3.0 and SAP BSP. When i click the button in Flex my BSP page is called correctly but my page attributes is not populated. I have check Flex in debug mode and the address look ok "http://dev.xxxxxxxx-indltd.com:8001/sap/bc/bsp/sap/appl/login.xml?persno=3999". In my BSP i have the same attribute name "persno" in my login page with auto checked. Any ideas why the parameter is not transferred.