Create database isn't using username

[GrandGrit]

Hello folks!

I'm trying to create a database with the directadmin api:

    def create_database(self, username, dbname, passwd):
        database_values = {'action': 'create',
                           'name': 'databasename',
                           'user': 'user',
                           'passwd': passwd,
                           'passwd2': passwd,}
        databasedata = urllib.urlencode(database_values)
        self.apirequest = "CMD_API_DATABASES?%s" % databasedata
        return self.return_results(self.send_request())

(the url will look like this: "/CMD_API_DATABASES?action=create&passwd=password&passwd2=password&name=databasename&user=user
")

But when i try this function it creates a database but it uses admin as username so the database name will look like 'admin_databasename'

How can i make a database with a databasename like 'username_databasename'?

Greets!

GrandGrit