gistfile1.txt

$('form.filter-bots').on('submit', function (e) {
    var $form = $(this);
    var $botCode = $form.find('#BotCode');
    if ($botCode.length === 0) {
        $botCode = $('<input id="BotCode" name="BotCode" value="" type="hidden" />');
        $form.prepend($botCode);
    }
    $botCode.val('RzipU6QGMMNh7d');
});