Understand deluge script on success
The actions that you define in the On success event will be executed when a new record is successfully submitted to the database or when an existing record is updated or deleted from the database. You can write a Deluge script and associate it with the 'On success' event.
Let's assume you have an OrderManagement application with an Order Placement form. You need to display a coupon code which the customer can use to get a discount on the next order. For this you can write a script for on success form event. This script will run on successful submission of the Order Placement form. In this case, when the customer successfully places the order, a unique code is displayed.