How to access variables in regular expression

Question

I have written a function to validate user entered password. It contains regular expression along with conditions.

conditions are

1. Password should be more than 8 and less than 14

2. Password should contain atleast a number.

Now my question, I want to pass those min and max numbers dynamically to regular expression

snippet, what I was trying :

function validatePassword(plain,minmaxValues) {
  const passwordChecker = /^(?=.*[0-9])[a-zA-Z0-9!@#$%^&*]{minmaxValues.min,minmaxValues.max}$/;
  return passwordChecker.test(plain);
}

When I debug, I can see passwordChecker value is not updating with minmaxValues.

will be appreciate, if anyone can help.

Thanks