Hi @rpaa ,
You can achieve this functionality by applying a code logic to alert the hidden field data,
You have to create a Duplicate submit button, on the new submit button click to add a function called “showAlertToUser()”,
Your hidden field value should be retrieved and stored in a variable before submission so that this function will trigger alert in a settimeout function, let's say after 2 or 3 seconds (The form often takes 1-3 seconds to submit the request).
You can add required code logic in the respective basic forms custom code,
If your hidden field value is related to the record which is going to be created then you can use Query String. (You can use in the update as well, in this case, hidden field value can be stored before the record save)
Thanks!
