Problem with array iterator

[eluser]michalo[/eluser]
Hi, I have array with SQL query results saved as cache file. I would like take only one row from this result and show it in my view. However, If I do that i receive error: Call to a member function offsetGet() on a non-object! What I am doing wrong? If I take all rows everything is ok.

Controller function:

Code:

public function searchajax()
    {
    
        $offset=$this->uri->segment(3, 0);
        $id=$this->uri->segment(4, 0);
        
        $pom=$this->cache->get($id);
        $iterator = $pom->getIterator();
        $iterator->seek($id);
        $data['wynik']=$pom;
        
        $data['id']=$id;
        $data['offset']=$offset+1;

        $this->load->view('ajax2', $data);
    }

View part:

Code:

<?php foreach($wynik as $row): ?>
..

    <?php    
    echo  $row->adres;
    echo  $row->miasto;
    ?>

...
<?php endforeach;?>