If you do not want a field to be visible to the customer on the Aeon web pages, but still need to set a value, you have the option of using a hidden field to insert the value for that field into the database.
This code should be added toward the top of the page right after the other hidden field entries.
These other hidden fields may be either or both of the following depending on the page being edited:
<input type="hidden" name="SessionID" value="<#PARAM name="SessionID">" >
<input type="hidden" name="AeonForm" value="XXXXXXXXXXXX">
The DefaultRequest.html page and shows the Username field inserted as a hidden field.