Custom Protection Plugin Issue

I am trying to build a protection plugin using the Plugin Maker in aMember. Below is what the plugin maker output. It works but in the groups database there is a column of "username" that needs to have the user's login name in it but the script keeps putting the User ID in it instead. I am needing the username column in the rasusergroup table to match the user's username in the radcheck database.

I tried changing the Am_Protect_Table::GROUP_UID => 'username' to Am_Protect_Table::FIELD_LOGIN => 'username' but that just made it error out.

Any body know how I might be able to fix this?

Code:

<?php
/**
* Kumpe-radius Integration Plugin
* Checklist (mark tested items with x):
* [x] - template generated
* [ ] - go to aMember Cp -> Setup -> Plugins and enable this plugin
* [ ] - test user creation
*       try to create user in aMember and add access manually.
*       Login to Kumpe-radius and check that
*       that corresponding user appeared in users list and all necessary
*       fields transferred
* [ ] - test password generation: login to kumpe-radius as the new user
* [ ] - update user record in amember and try to login and view profile in the script
* [ ] - implement single-login
*
**/
class Am_Protect_KumpeRadius extends Am_Protect_Databased
{
    const PLUGIN_DATE = '$Date$';
    const PLUGIN_REVISION = '@@VERSION@@';

    protected $guessTablePattern = "radcheck";
    protected $guessFieldsPattern = array(
        'username','attribute','op','value', 
    );
    protected $groupMode = Am_Protect_Databased::GROUP_MULTI;

    public function afterAddConfigItems(Am_Form_Setup_ProtectDatabased $form)
    {
        parent::afterAddConfigItems($form);
        // additional configuration items for the plugin may be inserted here
    }
    public function getPasswordFormat()
    {
        return SavedPassTable::PASSWORD_CRYPT;
    }
    /**
     * Return record of customer currently logged-in to the
     * third-party script, or null if not found or not logged-in
     * @return Am_Record|null
     */
    public function getLoggedInRecord()
    {
        // for single-login must return
    }

    public function loginUser(Am_Record $record, $password)
    {
        // login user to third-party script
    }
    public function logoutUser(User $user)
    {
        // logout user from third-party script
    }
    public function createTable()
    {
        $table = new Am_Protect_Table($this, $this->getDb(), '?_radcheck', 'id');
        $table->setFieldsMapping(array(
            array(Am_Protect_Table::FIELD_LOGIN, 'username'),
            array(':Crypt-Password', 'attribute'),
            array('::=', 'op'),
            array(Am_Protect_Table::FIELD_PASS, 'value'),
        
        ));
    
        $table->setGroupsTableConfig(array(
            Am_Protect_Table::GROUP_TABLE   =>  '?_radusergroup',
            Am_Protect_Table::GROUP_GID     =>  'groupname',
            Am_Protect_Table::GROUP_UID     =>  'username'
        ));
            
        return $table;
    }
    public function getAvailableUserGroupsSql()
    {
        return "SELECT
            groupname as id,
            groupname as title,
            NULL as is_banned, #must be customized
            NULL as is_admin # must be customized
            FROM ?_radgroupcheck";
    }
    function getReadme()
    {
        return <<<CUT
    kumpe-radius README
CUT;
    }
}

If I add a column to the database for uid and let the script add the user by uid would it be possible to also pass the username to a username column in the group table using the plugin maker?

If not how much would it cost to develop an integration plugin for what I am needing?

Or if it can just delete the user from the remote database when subscription is removed that would be great too. I don't really need groups, just need a way to deny access when subscription expires or is removed.