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How to refresh .tpl inside of hookDisplayAdminProductsE><tra

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I'm developing a module for prestashop 1.7 to save custom data of products in a custom table.

All works fine: can create new entries, update and delete old ones without problems.

What i can't do is refresh the tpl with the new values, or the edited ones, without refreshing the URL and going back to firsts product tab (then had to modules tab and configure my module and get back to right section).

Is there a way to refresh the TPL inside the  hookDisplayAdminProductsExtra without forcing a url refresh?

public function hookDisplayAdminProductsExtra($params)

        $id_product = (int)$params['id_product'];
        $this->context->smarty->assign('product_id', $id_product);
        $this->context->smarty->assign('product_key', $this->key);
        $this->context->smarty->assign('product_values', mymodulevalues::loadByIdProduct((int)$params['id_product']));    
        $this->context->smarty->assign('product_attributes', mymoduleattributes::loadByIdProduct((int)$params['id_product']));    
        return $this->display(__FILE__, 'views/templates/admin/tabs.tpl');




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