Pagination Error

[crispim]

I try used pagination in cakephp, but this is my return

Notice (8): Undefined variable: paginator [APP\views\culturas
\dados_periodo.ctp, line 53]

Code Context

<?php

      echo $paginator->prev();

this is my controller(only one part)

 var $paginate = array('limit'=>20,'page'=>1);

 $enviaDados = $this->paginate("Dados_periodo");
               $this->set('enviaDados',$enviaDados);
                        $this->render('dados_periodo');

this is my view (complete)

<?php
      echo $paginator->prev();
      echo $paginator->numbers(array('separator'=>' - '));
      echo $paginator->next();
?>
<table class="tabdados">
<tr>
<th><?php echo $paginator->sort('Cultura', 'cultura_id'); ?></th>
<th><?php echo $paginator->sort('Tipo do Plantio',
'tipo_plantio_id'); ?></th>
<th><?php echo $paginator->sort('Ano', 'anos_id'); ?></th>
<th><?php echo $paginator->sort('Periodo', 'periodo_id'); ?></th>
<th><?php echo $paginator->sort('Taxa', 'taxa'); ?></th>
</tr>
<?php foreach ($enviaDados as $enviaDado): ?>
<tr>
<td><?php echo $enviaDado['Dados_periodo']['cultura_id']; ?></td>
<td><?php echo $enviaDado['Dados_periodo']['tipo_plantio_id']; ?></td>
<td><?php echo $enviaDado['Dados_periodo']['ano_id']; ?></td>
<td><?php echo $enviaDado['Dados_periodo']['periodo_id']; ?></td>
<td><?php echo $enviaDado['Dados_periodo']['taxa']; ?></td>
</tr>
<?php endforeach; ?>
</table>

What is happen ?

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