Creating databases/database users with the remote API

I've become a bit baffled by the remoting API for creating databases and database users.

The DOC says is should use:

PHP:

sites_database_add($session_id, $client_id, $params);

With there parameters:

Code:

server_id  (int(11))
type  (varchar(16))
database_name  (varchar(64))
database_user  (varchar(64))
database_password  (varchar(64))
database_charset  (varchar(64))
remote_access  (enum('n','y'))
remote_ips  (text)
active  (enum('n','y'))

While this works, it only creates the database, and not a database user.
I've found an un-documented function: sites_web_database_user_add() and made it work like this:

PHP:

$dbuser = $client->sites_database_user_add( 
  $session_id, 0, array(
    "server_id" => 2,
    "database_user" => "mydbuser",
    "database_password" => "mydbpass"
  )
);

$result = $client->sites_database_add(
  $session_id, 0, array(
    "server_id" => 2, 
    "type" => "mysql",
    "database_name" => "mydatabase",
    "database_user_id" => $dbuser,
    "active" => "Y", 
    "remote_access" => "Y"
  )
);


When i look in the interface, the database and user is created.
But if i edit the database - the user is not selected in the dropdown, and the dropdown list itself is empty.

What is the best way to create databases and users using the remote API?

Thanks.

 

I'm not sure how to approach this - ISPConfig was installed using the ISPConfig-3.0.5.4p4.tar file