onCheck event does'nt work with tree

asked 2010-01-07 08:52:21 +0800

houcine
108 ● 1 ● 1

I have a tree that contains many nodes with checkmark,
I want to add an event onCheck (not onSelect) when I check node;
In filling the tree:
treeitem.addEventListener(Events.ON_CHECK, this);

In events:

if(evt instanceof CheckEvent)
{
Treeitem treeNode = (Treeitem)evt.getTarget();
if(treeNode.getAttribute("itemSelected").equals("CUSTOMER"))
{
logger.info("ITEM CHECKED ");

}
}
but I have no result