cakephp paginate Problim on cakephp 3.2.8

/**
     *
     */
    public function myarticles()
    {
        $this->paginate['Articles']['order'] = ['Articles.created, Articles.modified  DESC'];
        $this->paginate['Articles']['contain'] =
            [
                'ArticleCategories',
                'Users',
                'Tags',
            ];


        $data['user_id'] = $this->UserId;
        $this->paginate['Articles']['finder'] = ['MyArticles' => $data];
        $this->set('articles', $this->paginate($this->Articles));
        $this->set('_serialize', ['articles']);
    }