Adding Custom Values to Field Property in Forms

Hey everyone,

We have a form for people to update their email preferences one but we realized that the Fields we chose initially are labeled wrong. Instead of the default 'Subscription - Educational' fields from Marketo, we are using custom ones we made for all other forms. However, we didn't update it for this particular form. When I went in to change the Fields, I noticed that the Value property was removed (see photos for what I mean). We want to add the 'Value' and 'Label to Right' property. How can we rectify this situation? Our forms are designed so that the Label property stays blank and the Value property shows the information since we use rich text.

Thanks!