After an external user triggers a start event or intermediate event, using an external web link, a standard text that says “Action performed successfully” is shown. This message can be edited to give the external user a much more helpful thank you message. To do this there is a new button called “Edit message” available when external start event has been activated. Click on the button to create the custom thank you message.
The message can be edited using a simple and useful What You See Is What You Get (WYSIWYG) editor as shown below. Your message can be formatted to look good and you can even use process variables to present information from the process instance or form.