php - hookActionOrderSlipAdd() finding id_order_slip -

im building module uses hook hookactionorderslipadd();. in parameters there seems no way obtain id_order_slip required building new orderslip($id_order_slip);

the way see using database query credit slips order , selecting last one. not seem neat. can point me in right direction?

the start of hook:

public function hookactionorderslipadd($params){      $post = tools::getallvalues();      ppp($post);     ppp($params);      $id_order_slip = '????';      $order_slip = new orderslip($id_order_slip);     ppp($order_slip); } 

try code.

public function hookactionorderslipadd($params) {         $order_slips = orderslip::getordersslip((int)$params['order']->id_customer, (int)$params['order']->id);      foreach ($order_slips $order_slip_details)     {         $order_slip = new orderslip((int)$order_slip_details['id_order_slip']);         /* actions. */     } }