[flexcoders] Changing forms based on "states"

[mikey11]

I have a tree list on the left side of my hdividebox. I want differnet 
forms to show up on the right side based on the selected item in the 
tree list. 

public function formChanged(event:Event):void {
  selectedNode=Tree(event.target).selectedItem;

I believe the easiest wasy to do this is with states. Using a script 
checking for selectedItem with the output.
How do I select the form I want from the treelist since the treelist 
are just labels?