paginate + filters

Hi, i have some filters in the index page of a listing, you can choose all of the filters or just one, if i choose all of them they work fine but if i only choose one it gives me a blank web page, here is the code:

/app/controllers/quotes_controller.php
function index() {
        $this->Quote->recursive = 0;
        $filters = array();
       
        if(!empty($this->data['Quote']['desde']) && !empty($this->data['Quote']['hasta'])){
               $filters[1] = "Quote.fevento BETWEEN '".$this->data['Quote']['desde']."' AND '".$this->data['Quote']['hasta']."'";
              
        }
       
        if(!empty($this->data['Quote']['cliente_id'])){
            $filters[2] = "Quote.cliente_id = ".$this->data['Quote']['cliente_id'];
           
            $this->set('cliente_id', $this->data['Quote']['cliente_id']);
            $this->set('autocliente', $this->data['Quote']['autocliente']);
        }
       
        if(empty($filters)) {
            $filters[3] = "WEEK(Quote.fevento) = WEEK(NOW())";
            $this->set('cliente_id', '');
            $this->set('autocliente', '');
        }
       
        $filters[4] = "Quote.status = 0";
       
        $this->set('quotes', $this->paginate(null, $filters));
    }

/app/views/quotes/index.ctp

<table cellpadding="0" cellspacing="0">
    <tr>
            <th><?php echo $this->Paginator->sort('user_id');?></th>
            <th><?php echo $this->Paginator->sort('cliente_id');?></th>
            <th><?php echo $this->Paginator->sort('fentrega');?></th>
            <th><?php echo $this->Paginator->sort('fevento');?></th>
            <th><?php echo $this->Paginator->sort('frecoleccion');?></th>
            <th><?php echo $this->Paginator->sort('solicitante');?></th>
            <th><?php echo 'Total'?></th>
            <th><?php echo $this->Paginator->sort('created');?></th>
            <th class="actions"><?php __('Actions');?></th>
    </tr>
    <?php
    $i = 0;
    foreach ($quotes as $quote):
        $class = null;
        if ($i++ % 2 == 0) {
            $class = ' class="altrow"';
        }
    ?>
   
    <?php
        $total = 0;
        $subtotal = $quote['Quote']['subtotal'];
        $descuento = $subtotal*$quote['Quote']['descuento']/100;
        $flete = $quote['Quote']['flete'];
        $iva = ($subtotal-$descuento+$flete)*$quote['Quote']['iva']/100;
        $total_final = $subtotal-$descuento+$flete+$iva;
    ?>
   
    <tr<?php echo $class;?>>
        <td>
            <?php echo $this->Html->link($quote['User']['username'], array('controller' => 'users', 'action' => 'view', $quote['User']['id'])); ?>
        </td>
        <td>
            <?php echo $this->Html->link($quote['Cliente']['name'], array('controller' => 'clientes', 'action' => 'view', $quote['Cliente']['id'])); ?>
        </td>
        <td><?php echo $quote['Quote']['fentrega']; ?>&nbsp;</td>
        <td><?php echo $quote['Quote']['fevento']; ?>&nbsp;</td>
        <td><?php echo $quote['Quote']['frecoleccion']; ?>&nbsp;</td>
        <td><?php echo $quote['Quote']['solicitante']; ?>&nbsp;</td>
        <td><?php echo '$'.number_format($total_final,2); ?>&nbsp;</td>
        <td><?php echo $this->Time->format('d-m-Y',$quote['Quote']['created']); ?>&nbsp;</td>
        <td class="actions">
            <?php echo $this->Html->link(__('View', true), array('action' => 'view', $quote['Quote']['id'])); ?>
            <?php echo $this->Html->link(__('Edit', true), array('action' => 'edit', $quote['Quote']['id'])); ?>
            <?php echo $this->Html->link(__('Delete', true), array('action' => 'delete', $quote['Quote']['id']), null, sprintf(__('Are you sure you want to delete # %s?', true), $quote['Quote']['id'])); ?>
        </td>
    </tr>
<?php endforeach; ?>
    </table>

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