*I can't quite figure this out.* I saw the example at*http://forums.ext.net/showthread.php?postid=10491.aspx* but I can't get it to work.* Can't I do this without having JavaScript code?* Why can I update a Label, but not the TreePanel?* Can someone please post a purely VB Codebehind solution to refreshing a tree using AjaxMethod or AjaxEvent?* Thanks.