adding input dynamic

I am trying to create a dynamic input but it does not send the data someone could help me?

Add.ctp:

<div class='related'>

<?php $this->Html->script('jquery-2.0.0.min.js',array('inline' => false)); ?>

<table id='band_list'>

<th><?php echo $this->Form->input('Pedido.0.descricao'); ?></th>

<th><?php echo $this->Form->input('Pedido.0.quantidade'); ?></th>

<th><?php echo $this->Form->input('Pedido.0.unidade'); ?></th>

<th><?php echo $this->Form->input('Pedido.0.desconto'); ?></th>

<th><?php echo $this->Form->input('Pedido.0.subtotal'); ?></th>

</table>

<button id='add_band'>Add Band</button>

<script type='text/javascript'>

    var contador = 1;

    $('#add_band').click(function(event) {

        event.preventDefault(); 

        $('#band_list').append('<th><?php echo $this->Form->input("Pedido.'+contador+'.descricao"); ?></th>');

        $('#band_list').append('<th><?php echo $this->Form->input("Pedido.'+contador+'.quantidade"); ?></th>');

        $('#band_list').append('<th><?php echo $this->Form->input("Pedido.'+contador+'.unidade"); ?></th>');

        $('#band_list').append('<th><?php echo $this->Form->input("Pedido.'+contador+'.desconto"); ?></th>');

        $('#band_list').append('<th><?php echo $this->Form->input("Pedido.'+contador+'.subtotal"); ?></th>');

       $('#band_list').append('<tbody></tbody>');

        contador++;

    });

</script>

<?php echo $this->Form->end('Salvar');

echo $this->Html->link('Cancelar', array('action'=>'index'));

?>

</div>

ServicosController.php:

  public function add() {

if($this->request->is('post')) {

//debug($this->request->data);exit;

   $this->Servico->create(); 

   if ($this->Servico->saveAll($this->request->data)) {

$this->Session->setFlash('Os dados do serviço foram salvos.');

return $this->redirect(array('action' => 'view/'.$this->Servico->id));  

   }

   else {

$this->Session->setFlash('Os dados do serviço não puderam ser salvos.');

   }

}   

   #$servico = $this->Servico->findById('all');

#$this->set('servico', $servico);

        

        $clientes = $this->Servico->Cliente->find('list');

        $this->set('clientes', $clientes);

        $especialidades = $this->Servico->Especialidade->find('list');

        $this->set('especialidades', $especialidades);

        $vendedores = $this->Servico->Vendedor->find('list');

        $this->set('vendedores', $vendedores);

        $atendentes = $this->Servico->Atendente->find('list');

        $this->set('atendentes', $atendentes);

        $pedidos = $this->Servico->Pedido->find('list');

        $this->set('pedidos', $pedidos);

    }

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