Hey everyone! I can't validate the invoice

I found the method somewhere but it doesn't work...

This method twice changes Status: Draft -> PAID :(
I need to change the status to "open". In other words I need to validate invoice.

Help me please and tell me where Where can I get information about those methods?

$res = $model->execute_kw(
    $db,
    $uid,
    $password,
    'account.invoice',
    'invoice_validate',
    [5244]
);