Trouble accessing nodes in a DevExpressXtraTreeList via C# script

Hi,



Our application has a DevExpressXtraTreeList and I would like to navigate through the node using C# script.  I've created an alias to the object in the application.  When in Name mapping, I can select the alias and click edit.  This gives me a list of properties and fields which I can drill into, E.G. Nodes.FirstNode.Data.Name displays the name of first node in the tree.  Everything is cool so far until I try to do a similar thing using C#.



For example, I can get the a reference to the object using 

  TreeView = Aliases["MyApplication"]["MainForm"]["ToolWindowContainer"]["ToolWindow"]["ObjectPaletteControl"]["leftLeftPanel"]["leftList"]["treeList"]



I can access the Bottom property like this

  b = Treeview["Bottom"];



But if I try to access the Nodes the return value is null

  Nodes = Treeview["Nodes"];



I've read the test complete help about DevExpressXtraTreeList and have followed the instructions to install and enable the plugin.



Any help would be great.



Thanks,

Stewart.