Unhandled Error!

Undefined variable: age

Document	Category page
Document type	CMS page
Line	17
Exception class	Cms_ExecutionException

Code Highlight

      <? $age = Phpr::$request->getField('age') ?>
      <?= $age ?>
      <h1 class="_<?= $category->url_name; ?> _<?= $category->parent->url_name ?>"><img src="<?= $category->image_url(0, 120,120,false) ?>"/><?= $category->name; ?></h1>
    <? endif; ?>
    <div id="product_list">
 
      <? if($age != '') { 
            $this->render_partial('shop:category_products_plus_age');
         } else { 
           $this->render_partial('shop:category_products'); } ?>
    </div>
  </div>
  <div class="clearboth"></div>

#	Document	Type
1	Category page	CMS page