Click item on tree,the userdata is "undefined"

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#1

when I used follow code to click item on tree,the userdata’s value is “undefined”:

tree.attachEvent(“onClick”,function(id){

    var url = tree.getUserData(id,“url”);

alert(url);

    window.open(url);

return true;

});



and the XML like this:





http://mywebsite/mypage





I saw almost about this problem in the kb, but I still can’t solve the problem,please help,thanks!

#2

The same code works correctly locally.
Be sure that old xml, without userdata, is not cached