I have set up a zap so that whenever a ninjaform is submitted, a contact is created in dotdigital. 

In the action of the dotdigital step I have put in the data fields as they appear in dotdigital and linked it to the parts of the form that I want to be sent to dotdigital. 

However when testing the form, the user’s email and name gets sent but not the data that sits in a checkbox on the ninjaform. 

How would I ensure that data in the checkbox gets sent to dotdigital?