Call to undefined method my_model:dame_articulos()

[eluser]lucasvm[/eluser]
Hello

Im getting this error when i try to acces to the article page on my website, im doing this:

Code:

function muestra($id){
       $this->load->model('Articulos_model');

       //pido al modelo el artículo que se desea ver
       $arrayArticulos = $this->Articulos_model->dame_articulos($id);
       $numero_posts = $this->Articulos_model->dame_nro_posts();
       $datos_articulos = array('articulos' => $arrayArticulos,
                                'numero_de_posts' => $numero_posts);
       if (!$arrayArticulos){
                    show_404();
                }else
                    {
        $this->load->helper('url');
        $this->load->view('header');
        $this->load->view('articulos', $datos_articulos);
        $this->load->view('footer');
        }
   }

So the model articulos_model dooes exists, also the function dame_articulo existis and im doing this in articulos_model:

Code:

function dame_articulos($id){
            $sql = "myquery
                WHERE id =  '$id'";
        $query = $this->db->query($sql);
        $fav = $query->result_array();

        foreach($query->result() AS $row):
            $rows = $row;
            return $rows;
        endforeach;
        }

Does anybody knows why im getting this error? and how can i fix it?