What's wrong with my XML code?

Hi! I've been experimenting with XML files and would like to use them to create a branching dialogue system. I've read a bunch of tutorials, documentation, etc. and used Yarn to produce the XML file below but so far have been unable to extract any information and display it in a text object.

Can anyone see where I'm going wrong? The images below are from the test project and contain all the code I've used so far.

You need to load the xml data on ajax completed. Ajax.lastdata doesn't exist yet on start of layout (or use the system wait for previous action to complete action).