Doesn't fulfill Yandex .Metrics goals?

Question

JavaScript

Good afternoon.
Tell me how to make the target work on the modal window, when two inputs are filled. At the moment, it works with any click on the "Submit" button.
In index.php, a js plugin is connected with the following piece of code:

* заявка на звонок
     */
    $('.b-modal__send').on('click', function() {
        var all = true,
            $btn = $(this);
        yaCounter32857735.reachGoal('zvonok');
        $btn.text('Отправляем');
        $btn.attr('disabled','disabled');
        $('.b-modal input[type=text]').each(function(){
            if(!$(this).val()) {
                $(this).parent().addClass('has-error');
                all = false;
            } else {
                $(this).parent().removeClass('has-error');
            }
        })
        if(all) {
            $.post('/ajax/email.php', { send: 'Y', name: $('#inputModalName').val(), phone: $('#inputModalPhone').val()}, function (msg) {
                if (msg == 1) {
                    setTimeout(function() {
                        $btn.text('Отправлено');
                        $btn.addClass('btn-primary_success');
                    }, 300);
                    setTimeout(function() {
                        $('.b-modal').modal('hide');
                    }, 1300);
                    setTimeout(function() {
                        $btn.removeAttr('disabled');
                        $btn.text('Отправить');
                        $('#inputModalName, #inputModalPhone').val('');
                        $btn.removeClass('btn-primary_success');
                    }, 1400);
                } else {
                    $btn.text('Отправить');
                    $btn.removeAttr('disabled');
                }
            });
        } else {
            $btn.text('Отправить');
            $btn.removeAttr('disabled');
        }
    })

Thanks in advance..
ps link to lp.caparol-disbon.ru