Custom field in discourseconnect

Support
8

Next question is about add_groups. I have a comma delimited list, but it is not adding user to the groups.

$parameters =  array(
            'nonce'               => $nonce,
            'external_id'         => $sponsor['spid'],
            'email'               => $sponsor['email'],
            'username'            => $sponsor['email'],
            'name'                => $fullname,
            'add_groups'          => 'state_sponsor, status_sponsor, elect_sponsor',
            'location'            => $location,
            'custom.user_field_1' => $experience, //experience - Newbie, Less than 5, Pro, Old Timer
            'custom.user_field_2' => $club['name'].' ('.$sponsor['new_id'].')',  //school name with clubid
            'custom.user_field_4' => $division, //division
        );

The payload reported is:

add_groups=state_sponsor%2C+status_sponsor%2C+elect_sponsor
email=xxxx%40spart1.org
external_id=xxxx
name=Angela+Moore
nonce=xxxx
username=xxxx%40spart1.org
location=Landrum%2C+SC
custom.user_field_1=Pro
custom.user_field_2=Landrum+Middle+School+%28JSC0081%29
custom.user_field_4=Junior

In the logs for discouseconnect I see:

add_groups: state_sponsor, status_sponsor, elect_sponsor
admin: 
moderator: 
avatar_force_update: 
avatar_url: 
bio: 
card_background_url: 
email: xxxx@spart1.org
external_id: xxxxx
groups: 
locale: 
locale_force_update: 
logout: 
name: Angela Moore
nonce: xxxx
profile_background_url: 
remove_groups: 
require_activation: 
return_sso_url: 
suppress_welcome_message: 
title: 
username: xxxx@spart1.org
website: 
location: Landrum, SC

Which looks correct.
I would like to add this user to the ‘state_sponsor, status_sponsor, elect_sponsor’ groups.