fieldFile в пользовательском виджете

fieldFile.php

// /templates/default/widgets/chack/chack.php
<?php
echo $file;
echo $qwe;
?>
// system/widgets/chack/options.form.php
<?php
class formWidgetChackOptions extends cmsForm {
    public function init() {
        $a = [
            'type' => 'fieldset',
            'title' => LANG_OPTIONS,
            'childs' => [
                new fieldFile("options:file", [
                    'title' => "Файл .txt",
                    'options' => ['extensions' => 'txt']
                ])
            ]
        ];
        
        return [$a];
    }
}
?>
// system/widgets/chack/widget.php
<?php
class widgetChack extends cmsWidget {
    public function run(){
        $file = $this->getOption("file");
        if ($file === null) {
            $file = "тут null";
        }
        return ["file" => $file,
            "qwe" => "qweqwe"
            ];
    }
}