Formulas & Validations
Creating Validation Rules

I'm running into problems with the check not working. I've read through over a dozen forum posts prior to creating this one.

I followed this video exactly: https://www.youtube.com/watch?v=PUByNV8NAPY

I've tried every example code contained in every single post. I've been trying this "15 min" module for 3 hours.

Here is my error every single time: 

Challenge Not yet complete... here's what's wrong: 
The validation rule failed to enforce the business logic

Please let me know any advice or solutions. This is extremely frustrating. Thanks.

Formulas & Validations
Creating Validation Rules

I'm running into problems with the check not working. I've read through over a dozen forum posts prior to creating this one.

I followed this video exactly: https://www.youtube.com/watch?v=PUByNV8NAPY

I've tried every example code contained in every single post. I've been trying this "15 min" module for 3 hours.

Here is my error every single time: 

Challenge Not yet complete... here's what's wrong: 
The validation rule failed to enforce the business logic

Please let me know any advice or solutions. This is extremely frustrating. Thanks.