pastefromword button is not showing up

[code123xy]

This is my code:

$this->registerJs("CKEDITOR.plugins.addExternal('pastefromword', '" . Yii::$app->request->BaseUrl . "/pastefromword/plugin.js', '');"); 
...

echo $form->field($model, 'name')->widget(

    CKEditor::classname(), [

       'options' => ['rows'=>8],    

       'preset' => 'custom',

       'clientOptions'=>[

             'extraPlugins' => 'pastefromword',

             'toolbarGroups' => [

                ['name' => 'basicstyles', 'groups' => ['basicstyles', 'cleanup']],

                ['name' => 'colors'],

                    ['name' => 'pastefromword'],
         ]
        ]
]);

I downloaded plugin in web folder. There is no errors in my console but button isn't showing up.

[code123xy]

Fixed. For pastefromword to work, you also need to download clipboard plugin.