How to approve/reject or respond a notification through script

How to approve/reject or respond a notification through script

BEGIN
   wf_notification.setattrtext (nid         => '4754620',
                                aname       => 'RESULT',
                                avalue      => 'REJECTED'
                               );
   wf_notification.respond (nid         => '4754620',
                                     respond_comment =>  'Reject From backend',
                                     responder =>  'XXTEST');
   COMMIT;
END;


nid =  will be notification id

There are multiple ways to get notification id

-  Open the notification in the application through SYSADMIN or any other user
    in the notification below sent and to date, you can see the ID

or

-   you can search the notification in wf_notification table

aname = will be always RESULT

avalue = will be APPROVE,REJECTED or any other action .

Generally for avalue , perform the appropriate action on the notification through front end
and see the value of RESULT attribute in wf_notification_attributes table.

responder coment = any comment

responder => will be recipient role/user name