tout a fait bloqué

salut svp aidé moi, j ss bloqué (j travail avec cakephp 2.3.0)
je veux faire un multi suppression de mes Clients et voila mon code qui ne fonctione pas, message error:

Notice (8): Undefined index: element [CORE\Cake\View\Helper\SessionHelper.php, line 131]

dans mon AppController.php

var $multiActions = array();
        function multi() {
            if (!isset($this->data'action']) || !count($this->data'action'])) {
                $this->_flash(__('Action was not defined in request.', true),'error');
                $this->redirect($this->referer(), null, true);
            }
            foreach ($this->data'action'] as $action=>$v){}
            if (!in_array($action,(array)$this->multiActions)) {
                $this->_flash(__(sprintf('Action %s is not allowed.',$action), true),'error');
                $this->redirect($this->referer(), null, true);
            }
            if (!method_exists($this,$action)) {
                $this->_flash(__(sprintf('Action %s is invalid.',$action), true),'error');
                $this->redirect($this->referer(), null, true);
            }
            $this->$action();
        }

        function admin_multi() {
            $this->multi();
        }

        function _flash($message,$type='message') {
            $messages = (array)$this->Session->read('Message.multiFlash');
            $messages] = array('message'=>$message, 'layout'=>'default', 'params'=>array('class'=>$type));
            $this->Session->write('Message.multiFlash', $messages);
        }

dans mon ClientsController.php

var $name = 'Clients';
var $multiActions = array('admin_multi_delete');

function admin_multi_delete() {
        if (!isset($this->params'form']'record']) || !count($this->params'form']'record'])) {
            $this->_flash(__('No records selected.', true),'warning');
            $this->redirect($this->referer(), null, true);
        }
        $ids = array();
        foreach ($this->params'form']'record'] as $id=>$v) {
            if ($v == 1) {
                if ($this->Client->del($id)) {
                    $this->_flash(__(sprintf('Deleted record %d.',$id),true),'success');
                }
                else {
                    $this->_flash(__(sprintf('Could not delete record %d.',$id),true),'error');
                }
            }
        }
        $this->redirect($this->referer(), null, true);
    }

dans default.ctp

<div id="messages">
    <?php
    if ($this->session->check('Message.flash')) $this->session->flash();
    if ($messages = $this->session->read('Message.multiFlash')) {
    foreach($messages as $k=>$v) $this->session->flash('multiFlash.'.$k); }
    ?>
</div>

dans views/Clients/index.ctp

<?= $this->form->create('Client',array('id'=>'ClientListForm','url'=>array('controller'=>'Clients','action'=>'multi')));?>
        <div class="box-content" >
            <table class="table table-striped table-bordered bootstrap-datatable datatable">
            <thead>
                    <tr>
                <th><span class="select_all">a</span>|<span class="select_none">n</span></th>
                <th><?= $this->paginator->sort(__('id',true),'id');?></th>
                <th><?= $this->paginator->sort(__('nom_cli',true),'name');?></th>
                <th><?= $this->paginator->sort(__('ville_cli',true),'Ville');?></th>
                <th class="actions"><?php __('Actions');?></th>
                    </tr>
            </thead>
            <tbody>
            <?php
            $i = 0;
            foreach ($Clients as $Client):
            $class = ($i&1)?' class="altrow"':'';
            ?>
            <tr<?php echo $class;?>>
            <td>
                <?= $this->form->input($Client'Client']'id'],array(
                                                                'type'=>'checkbox',
                                        'label'=>false,
                                        'name'=>'record'.$Client'Client']'id'].']',
                                        'id'=>'listRecord_'.$Client'Client']'id'],
                )); ?>
            </td>
                <td>
                        <?= $Client'Client']'id']; ?>
            </td>
            <td>
                <?= $Client'Client']'nom_cli']; ?>
            </td>
            <td>
                <?= $Client'Client']'ville_cli']; ?>
            </td>
            <td class="actions">
                    <?= $this->html->link(__('View', true), array('action'=>'view', $Client'Client']'id'])); ?>
                <?= $this->html->link(__('Edit', true), array('action'=>'edit', $Client'Client']'id'])); ?>
                <?= $this->html->link(__('Delete', true), array('action'=>'delete', $Client'Client''id']),null,
                                    sprintf(__('Are you sure you want to delete # %s?', true), $Client'Client']'id']));
                                 ?>
            </td>
            </tr>
                <?php endforeach; ?>
        </tbody>
    </table>
</div>

<div class="multi_actions">
    <input type="submit" name="data[action][admin_multi_delete]" value="Delete" onclick="return confirm('<?php __('Are you sure you want to delete
    the selected records?'); ?>');"/>
</div>

<?= $this->form->end();?>

Merciii ^^