Hi Curtis,
Thanks for your update. At this time, I suggest you to check if you have set the RequestNumber formula correctly (At page 12 of the workshop), you can also check the task list to see if you can find the unique RequestNumber.
Please also pay attention to the capitalization, for it may cause the rules' failing.
If the issue persists, to get the further help, since we are not able to assistant with development issues, I would like you can raise this question in our MSDN forum.
Best Regards,
Evan Zhang
