protected function AddSubmit($name = '', $label = '')
    {
        $defaultLabel = $this->Label('Submit');
        if (!$name)
        {
            //html attributes better without dot
            $name = str_replace('.', '-', $defaultLabel);
        }
        if (!$label)
        {
            $label = Worder::Replace($defaultLabel);
        }
        $this->triggerName = $name;
        $field = new Submit($name, $label);
        $this->Elements()->AddField($field);
        return $field;
    }