Magento 2 – Dynamic custom validation error message not working

i’m using Magento 2.4.1 and i add custom validation with a custom error message to detect which character is wrong and add it to the message:

define([
    'jquery'
], function ($) {
    return function () {
        var validator = this;
        $.validator.addMethod(
            'validate-unwanted-character',
            function (value,elm) {
                if (value.length != 0){
                    var regExp = /[a-zA-Z0-9u3040-u30ffu3400-u4dbfu4e00-u9fffuf900-ufaffuff66-uff9f]/g;
                     if(!regExp.test(value) && value.length < 2){
                        var errorCharacter = value.replace(regExp, '');
                        validator.errChar =   $.mage.__('"%1" is an invalid character's, please correct your input.').replace('%1', errorCharacter)
                        return false;
                    }else if(!value.match("^[-A-Za-z0-9()./ u3040-u30ffu3400-u4dbfu4e00-u9fffuf900-ufaffuff66-uff9f]+$")){
                        var errorCharacter = value.replace(regExp, '');
                        validator.errChar =  $.mage.__('"%1" is an invalid character's, please correct your input.').replace('%1', errorCharacter)
                        return false;
                    }
                }
                return true;
            },
            validator.errChar //this should contain the error message but always empty
        );
    }
});

i add this validation for firstname,lastname,company, and street in edit address form in frontend. However the error message is always empty

when i do alert(validator.errChar) inside the if statement it is showing correct message , i pass the message to this variable so i can have dynamic message for each input element