[flexcoders] Sorting XMLListCollection based on node value

[flexcoder2008]

I have an XMLListCollection that I want to sort based on a particular
node value.  All of the examples I have seen show sorting by XML
attribute.

My xml is in the following format:

<Employee>
  <FirstName>William</FirstName>
  <LastName>Jackson</LastName>
  <DisplayName>Bob Jackson</DisplayName>
</Employee>

I want to sort items by the DisplayName node, which will show up in a
List control.

Here's the code I've attempted (not working)

var s:Sort = new Sort();
s.fields = [new SortField("DisplayName")];
myXMLListCollection.refresh();

                
How do I sort based on a particular XML node?