Please pass the parent node element to the 'reload' method.
var p = ... // get your parent node
$('#tt').tree('reload', p.target); // reload the parent node
when node state in open it is not work
i change state to closed and reload but again not work
var selectedNode = $('#tree').tree('getSelected');
$('#tree').tree('update', {
target: selectedNode.target,
state: 'closed'
});
$('#tree').tree('reload',selectedNode.target);
