Since the Membership plugin does not natively support extra meta fields such as address, phone number, country, etc., I'm going to use my Formidable Pro form to capture the data and place it in the database. However, I need to make sure the form assigns the level upon sign-up (free memberships). How could I determine the correct value for a Level? I looked in the database and saw the table xxx_m_membership_levels and found the field names for each level. Would it be a boolean value of 0/1 or true/false?