Add Hook in admin 1.6

[CptSilver]

Hi,
I'm trying to create a module to change a little the admin. I want to put a field in the features of the product.
 
I followed the doc of prestashop on how to create a module and add an hook but nothing shows.

 

    public function install()
    {
        if (Shop::isFeatureActive()) {
            Shop::setContext(Shop::CONTEXT_ALL);
        }
        return parent::install() &&$this->registerHook('featureForm');
    }


    public function hookDisplayFeatureForm($params){
      return $this->display(__FILE__, 'featureform.tpl');
    }

 

and i have created the /views/templates/admin/featureform.tpl

content of the tpl :

<div>IM INSIDE</div>

 

 

the hook is on the position menu, but nothing on the product/features page

 

Someone has an idea?

 

Thanks

Edited September 3, 2014 by CptSilver (see edit history)