PHP Include Not Working in Plugin
 

I'm trying to include a php file in one of the templates for Bananalive's vbTournaments mod but have run into trouble. It's been a while since I've attempted something like this so I followed this guide: Including External Files but it still isn't working. If anyone could let me know what I'm doing wrong I'd greatly appreciate it.

/example.php contents:
I have real content but I scaled back to hello world for simplicity while testing.


Plugin:
Product: vB Tournaments, Ladders and Leagues Manager
Hook Location: global_start
Title: Example Block
Exec Order: 5
Code:
I tried both include and require_once and I've tried both with and without the preRegister


Edit: I forgot to mention that I added {vb:raw myincludedphp} to the tmnt_index_c template, and I tested plain text in the same spot to ensure I was outside an if/else statement.

--------------- Added [DATE]1530212690[/DATE] at [TIME]1530212690[/TIME] ---------------

Update: I still need to test my real code but I found the issue... a simple space. The code example from the manual contains an extra space in the preRegister that I didn't catch when substituting my variable name.