You’ll need an instance of the above script for every option you want to change the value for. You’ll also need to add your own ID and value. The ID for a checkbox option in Unbounce is comprised of the label for the field and the label for the option separated by an underscore.
In the code above the checkbox field is labelled “untitled” and the option I’m setting the value for is labelled “choice_1” (It’s the default naming when adding the checkbox field to the page).
Ex. field label = "choose a plan"
option 1 label = "starter"
option 2 label = "Pro99"
option 3 = “Free”
option 1: #choose_a_plan_starter
option 2: #choose_a_plan_pro99
option 3: #choose_a_plan_free
You can set the value to anything you choose
Pro-tip: Copy and paste are your best friends for this one if you have a lot of options
Hope this helps out a bit!