I've been trying to add custom validation to contour.js

here is my input field with the attribute data-val-matchemail

<input type="text" name="5621755b-8bab-4a19-8c68-bf35860062fe" id="5621755b-8bab-4a19-8c68-bf35860062fe" class="text" value="" data-val-matchemail="email" maxlength="500">

and my custom rules in contour.js. My issue is that it is not firing

    $.validator.addMethod('contour_matchemail', function (value, element) {
        console.log("contour_matchemail");
        return valid;
    });

    $.validator.unobtrusive.adapters.addBool("matchemail", "contour_matchemail");