Email notification script

Hello, im editing one multisite running under wordpress.
I found this in profile page template:

h2>Notification</h2>
            <fieldset class="checkboxes">
                <div>
                    <input id="form-news" type="checkbox" name="notify_news" <?php echo get_the_author_meta('notify_news', $current_user->id)? 'checked="checked"' : null ?>>
                    <label for="form-news">New post</label>
                </div>

                <div>
                    <input id="form-poll" type="checkbox" name="notify_poll" <?php echo get_the_author_meta('notify_poll', $current_user->id)? 'checked="checked"' : null ?>>
                    <label for="form-poll">New poll</label>
                </div>

                <div>
                    <input id="form-comment" type="checkbox" name="notify_comment" <?php echo get_the_author_meta('notify_comment', $current_user->id)? 'checked="checked"' : null ?>>
                    <label for="form-comment">New comment in discusion</label>
                </div>
            </fieldset>

Problem is, that it doesnt work :/. Do i need to set something in wrodpress or add something in this script?

Thanks for help.
EDIT: i translated slovak words in script to english.