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<?phpif (!defined('IN_CB')) { die('You are not allowed to access to this page.'); }
 
 $default_value['thickness'] = 30;
 $thickness = intval(isset($_POST['thickness']) ? $_POST['thickness'] : $default_value['thickness']);
 registerImageKey('thickness', $thickness);
 ?>
 <tr>
 <td><label for="thickness">Thickness</label></td>
 <td><?php echo getInputTextHtml('thickness', $thickness, array('type' => 'number', 'min' => 20, 'max' => 90, 'step' => 5, 'required' => 'required')); ?></td>
 </tr>
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