Incrementing Number based on parent record total - Legacy Accounting Software requirement

Good afternoon Forest,

Your instructions were very clear and easy to follow. I was able to replicate this function in my app perfectly. I've also made sure to hide the green Add PO button from the users so that they will only use the modified Add PO field. I've also made the PO Number read only on the form view so they're unable to modify the value. Thank you again for your help, I really appreciate it!