Welcome to ESOUI!
Your code looks good at first glance. Aside from the label always being set to "Location Updated" instead of the zoneName, but that's probably something you changed to debug your code? Does the label show up in the UI, or is that missing too?
Here are a few things you could try:
- Use /zgoo to see if the TCDInfoPanel exists.
- If not, check that your manifest contains the correct file names and try to put an error("Hello World") in the first line of the Lua file to see if it is executed.
- Per default the debug output is only shown on the first chat tab, so make sure you have that one selected.
- Disable any other addons that may interfere with your code (just for testing).