AcceptOrder method not working

[mikeWoods]

Hi dear friends

I need to accept an order immediately in a hook. the hook I'm using is "ShoppingCartCheckoutCompletePage" that passes the order ID (I log it and it's received correctly).
But in this hook when I call internal API to accept the order it doesn't work although it returns success message. The order still remains in pending status.

My code:

$orderid = $vars['orderid'];
$postData = array('orderid' => $orderId);
$results = localAPI("AcceptOrder", $postData);

The result:

array(1) { ["result"]=> string(7) "success" }