Hi there, I have a page with a Gallery.page.xml looking like this: <?xml version="1.0" encoding="UTF-8"?> | <page xmlns="http://jboss.com/products/seam/pages" | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd" | login-required="true"> | | <param name="tankId" value="#{tankHome.tankId}" required="true"/> | | </page> | This works great when you link to the page with things like <s:link view="/Gallery.xhtml" value="Gallery"/>. Basically tankId is populated when you use GET parameters. Within the Gallery.xhtml page I have a form that allows for picture uploading. When I hit the upload button I get javax.faces.validator.ValidatorException: value is requiredIf I remove the required="true" attribute from the param it works like a charm. Only thing is I have no way of enforcing that a valid id is being provided. I thought that this stuff gets automatically populated if I stay withinn the same page and the page parameter is set? It work for links but not for JSF form submissions. I also tried this <?xml version="1.0" encoding="UTF-8"?> | <page xmlns="http://jboss.com/products/seam/pages" | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd" | login-required="true"> | | <param name="tankId" value="#{tankHome.tankId}" /> | <restrict>#{tankHome.tankId != null}</restrict> | | </page> but with this I get org.jboss.seam.security.AuthorizationException: Authorization check failed for expression [#{tankHome.tankId != null}] when I submit the upload form. Again the entire upload thing works fine as long as I don't try to validate/restrict the tankId/tankHome in page.xml. I wonder if I got some concepts of auto parameter propagation wrong or if this is a bug? Thanks, Thorsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4117663#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...