image form validation -> config

[eluser]DaTran[/eluser]
I have this in my controller; as you can see i am using the form validation config file to call all validations.

Code:

if($this->form_validation->run('anime/add') == TRUE){
        
        if($this->anime_model->add($this->input->post())){
          if($this->upload->do_upload('image')){
            $template['result'] = TRUE;
          }
        }
}

How do I use the form validation to "require" the

Code:

<input type="file" name="image" size="20" />

field. (views page)
It keeps saying that there is no image selected.

I am also using MY_Form_validation.php to call in custom validations.