Custom Regex causing error on save

Hi, I have a form with a “text” field which is capturing a password. I want the password to have a minimum of eight characters, at least one uppercase letter, one lowercase letter, one number and one special character. I have put in my own regex but when I put it in and save the form it always produces an error. Am I not supposed to be able to put in my own regex?

I have tried both of these which cause an error when saving the form:
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$

^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).{8,}$