Approval Routing - Step Approved

Hi,

I am trying to add history to Customer Order when the step approved. The problem is I can't take information from approval routing. History API new is working. I want to add a description of the step to history. Is there a way?

DECLARE
	order_no_   VARCHAR(32000) := '&KEY01';
	info_       VARCHAR2(32000) := NULL;
	objid_      VARCHAR2(32000) := NULL;
	objversion_ VARCHAR2(32000) := NULL;
	attr_       VARCHAR2(32000) := '';
	mesaj_      VARCHAR2(1000);
	desc_       VARCHAR2(1000);
BEGIN
	SELECT description
	  INTO desc_
	  FROM approval_routing
	 WHERE key_ref = ifsapp.client_sys.get_key_reference('CustomerOrderLine', 'ORDER_NO', order_no_)
		   AND step_no =
		   ifsapp.approval_routing_api.get_current_step('CustomerOrder', (ifsapp.client_sys.get_key_reference('CustomerOrderLine', 'ORDER_NO', order_no_)));
	mesaj_ := desc_ || ' verdi!';
	FOR rec IN (SELECT * FROM customer_order WHERE order_no = order_no_) LOOP
		BEGIN
			attr_ := 'ORDER_NO' || chr(31) || rec.order_no || chr(30) || 'DATE_ENTERED' || chr(31) || to_char(SYSDATE, 'YYYY-MM-DD-HH24.MI.SS') || chr(30) ||
					 'USERID' || chr(31) || ifsapp.fnd_session_api.get_fnd_user() || chr(30) || 'MESSAGE_TEXT' || chr(31) || mesaj_ || chr(30) || 'HIST_STATE' ||
					 chr(31) || rec.objstate || chr(30);
			ifsapp.customer_order_history_api.new__(info_, objid_, objversion_, attr_, 'DO');
		END;
	END LOOP;
END;