Can Custom database fields be added wysiwyg html area?

Hello members

I have a database being built by a coldfusion developer and I had a request which was:

I need to add custom fields into an html wysiwyg area like username, password etc. Which would then be used as an email that gets sent to customers when they subscribe to a website.

The reason the html area is where we need the custom fields, is so we have the ability to change the way the format of all the text appears at will.

I have seen this done with php email systems - just wanted to know if there was a coldfusion equivalent

Eg layout with custom fields

--------------------------------------------------------------

thankyou for signing up {custom_name},

Your user name is {custom_username}

thankyou for registering

--------------------------------------------------------------

My coder said this wasn't possible (He can add the WYSIWYG editor - but can't add the ability to add custom fields), so I was just wondering if anyone out there in the coldfusion community could help out with advise?

Thanks in advance

Karl