If you are using a User ID field, this function is not needed. Use this function if you are collecting email addresses from users who are not logged in, and would like to show an avatar using only the email address.
[25 avatar=40]
25 = the field ID
40 = the size of the avatar

This example will allow the CSV to be encoded with BOM.

You can use the example below to replace the success/update message for a specific form.