Under Form Actions -> On Edit -> On Success, I have the following code:

 

sendmail
(
    To       :  "xxx@xxx.com"
    From     :  zoho.loginuserid
    Subject  :  "New hire update for " + input.Preferred_display_name
    Message  :  "The EAD entry for " + input.Preferred_display_name + " has been updated" + input.formdata
)

This will email all the form data using the input.formdata variable. However I want to just email the changes the user has entered into the form, what variable do I need to use so that only the new edits are emailed and not all the previous form data?