public function callbackRemove($imageId)
    {
        $image = Yii::$app->storage->getImage($imageId);
        
        if ($image) {
            $this->model->flowDeleteImage($image);
            if (Storage::removeImage($image->id, true)) {
                return $this->sendSuccess('image has been removed');
            }
        }
        
        return $this->sendError('Unable to remove this image');
    }