using Zoho fields in Rich Text possible?

using Zoho fields in Rich Text possible?

Hi there,

I want to use a rich text in a form, where the user can also place zoho fields. The value of the field should then be rendered in the rich text or in an output. Is this possible?
For example, if the user could add something like "Dear {!Customer.Firstname}"  within the rich text, then I want to be able to render this in an email stating "Dear John" in the email body. Anyone experience with this?

Thanks in advance,
boudewijn