Hello, My mission; I want to implement a help window based on all help that is related to a page. This means I want to trigger the portlets to add help to a specific area on the screen. In my case it will be a div that is hidden until the user presses on the help button. This way I have a help that is generated by a portlet based on all portlets that are on the page. My problem; To accomplish this I'm using the actionURL that is standard for every portlet. So I have one help portlet that generates the needed help for all portlets using the actionURL. However this is failing; my piece of code; //for every window on this page we will try to trigger the help page and include this information in a global help page for (Iterator windowIterator = currentPage.getChildren().iterator(); windowIterator.hasNext();) { PortalNode portalNode = (PortalNode) windowIterator.next(); if ( portalNode.getType() == PortalNode.TYPE_WINDOW ) { String actionURL = getPortalNodeHelpURL( resp, portalNode ); private String getPortalNodeHelpURL(RenderResponse resp, PortalNode portalNode ){ if(resp instanceof JBossRenderResponse){ try { PortalNodeURL childURL = ((JBossRenderResponse) resp).createActionURL(portalNode); childURL.setParameter( "mode", "help" ); return childURL.toString(); This call leads to an exception. Can someone tell me what I'm doing wrong? Jeroen. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3970340#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...