Repeat/echo the value of the failed rule in the error message?

[RickKukiela]

I'm sorry if this is answered somewhere, I tried searching here and read the Readme twice, and analyzed the error method in the src and cannot figure out how to do this, or if it's even possible.

Currently I can repeat back the name of the field that failed its validation in the error message by using {field}, however for debugging purposes I was trying to add {value} and it does not work. I checked the error() method at runtime and the $values array that gets passed is empty so the $params array it creates for the vsprintf call is empty.

How can I write my rule so the $values param that is passed to the error method is populated?

Here is the code I am currently using:

        $this->validator->rule('required', 'primaryNtpServer');
        $this->validator->rule('optional', 'secondaryNtpServer');
        $this->validator->rule(function ($field, $value) {
            if ($field === 'secondaryNtpServer' && empty($value)) {
                return true;
            }
            return Services::dateTime()::verifyNtpdServer($value);
        }, ['primaryNtpServer', 'secondaryNtpServer'], [)->message('{field} "{value}" did not respond to an NTP request.');