prestashop 1.6 : carriage return in features

[Zieg]

hi,

i work on firefox with prestashop 1.6, and i would like to  display multiple lines for one feature, like this :  

 

 

I overrided the file AdminFeaturesController.php, in the function initFormFeatureValue I replaced

array(
    'type' => 'text',
    'label' => $this->l('Value'),
    'name' => 'value',
    'lang' => true,
    'size' => 33,
    'hint' => $this->l('Invalid characters:').' <>;=#{}',
    'required' => true
),

with

array(
    'type' => 'textarea',
    'label' => $this->l('Value'),
    'name' => 'value',
    'lang' => true,
    'hint' => $this->l('Invalid characters:').' <>;=#{}',
    'required' => true
),

 

Then I modified the front office template file themes/default/product.tpl, adding nl2br function like this :

{$feature.value|nl2br|escape:'html':'UTF-8'}

 

but now the FO displays the <br /> tag without interpreting them

 

does anyone know how to make the page interprete those tags or why it reacted like this ?