[flexcoders] Tree Item by Index

How can I get an item, when I've an item index? I think that tree.selectedIndex = index; item = tree.selectedIndex; will be great, but is there another method?

[flexcoders] Override owner in TreeItemRenderer

I need a send [EMAIL PROTECTED] to an owner (tree). I've extend Tree class and write function Tree.setPath(); But when I tried to use this function as owner.setPath Flex says Call to a possibly undefined method setPath through a reference with static type flash.display:DisplayObjectContainer.;