"norman.richards(a)jboss.com" wrote : Oh, I should add that if you aren't sure of the name, a quick solution is to take a look at the generated HTML. Search for "datMod" and see how it is being used. Well ok I see my "formId:datMod" and the "formId" itself. My general problem now is, that findComponent() always return null. Is it really normal, that | javax.faces.context.FacesContext | .getCurrentInstance().getViewRoot().getChildCount() returns 0 ? By the way, javax.faces.context.FacesContext is not found by using standard Seam libs, so I added lib/myfaces-api-1.1.4.jar from the Seam install dir to my class path, hope this not caused the ill functioning. Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3993499#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...