application/modules/mod_discount/assets/gift_succes.tpl
<div class="groups_form" >
<label for="giftcert">
<span class="title">{lang('Certificate code', 'mod_discount')}</span>
<span class="frame_form_field">
<div class="o_h">
{echo $gift->key} {lang('on amount', 'mod_discount')}:{echo $gift->value}
<input type="hidden" name="giftkey" value="{echo $gift->key}"/>
</div>
</span>
</label>
</div>