Problem using two different database

Hello, people of the forum.
All right?

I'm working with two databases, MySQL as primary and Progress as secondary bank via ODBC ...
The following is the code for the connections:

database.php

PHP Code:

$active_group = 'default';
$query_builder = TRUE;
$active_record = TRUE;

$db['default'] = array(
    'dsn'    => '',
    'hostname' => 'Xxxx',
    'username' => 'Xxxx',
    'password' => 'Xxxx!',
    'database' => 'Xxxx',
    'dbdriver' => 'mysqli',
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => (ENVIRONMENT !== 'production'),
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
);


$db['Zzzzzzzzz'] = array(
    'dsn'       => '',
    'hostname' => 'Zzzz',
    'username' => 'Zzzz',
    'password' => 'Zzzz',
    'database' => 'Zzzz',
    'dbdriver' => 'odbc',
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => (ENVIRONMENT !== 'production'),
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
); 


The default database is working normally, but when I try to access the database via ODBC with activerecord the following error:

Code:

Fatal error: Call to undefined method CI_DB_odbc_driver::get() in C:\xampp\htdocs\novo\application\modules\test\models\Md_test.php on line 15

md_test .php

PHP Code:

class Md_test extends CI_Model {

    function __construct(){
        parent::__construct();
        $this->test= $this->load->database('Zzzzzzzzz', TRUE);
    }

    
    function buscaPedidos($dt)
    {
        return $this->test->get('Zzzzz'); // line 15
    }
    
} 


Can anybody help me?