Configuring the Gravity Forms Format Form. Elite $181 / Year Buy Now. radio Gravity Forms Image Choices is a premium add-on brought to you by JetSloth, one of the Gravity Forms certified developers. Radio Buttons Default value box. Head over to the forms setting tabs and click on the Image Choices option. Gravity Forms An array containing the the individual properties for each radio button item. Radio Field - Gravity Forms Documentation Radio Buttons Default value box - Get Help - Gravity Forms Then click on the “Advanced” tab. How to Uncheck a Radio Button in Gravity Forms Editor