Flash builder + Zend amf | Insertion function not working when called second time

Question

I'm using standart createOrders function which is autogenerated by Flash Builder 4.6. It works brilliantly when used once. Here is code:

protected function okButton_clickHandler():void
            {
                var orders2:Orders = new Orders();
                //setting values
                createOrdersResult.token = ordersService.createOrders(orders2);
                ordersService.commit();                 
            }

When same button is clicked second time and consequently okButton_clickHandler launched, data is not inserted to database. I added result handler with trace("saved"); and what I saw was that "saved" was written on first click, but not second.

Also I used Charles to see whether request is being sent second time. And no it is not.

EDIT Just tried to generate auto generate form. Only had to add commit(); because else request is not sent. And here is save problem — request is sent only on first button click.

EDIT 2 So all in all problem is in fact that ordersService.createOrders(orders2); works only once. Because if i try

createOrdersResult.token = ordersService.createOrders(orders2);
                ordersService.commit();
                createOrdersResult.token = ordersService.createOrders(orders2);
                ordersService.commit();
OR
            createOrdersResult.token = ordersService.createOrders(orders2);             
            createOrdersResult.token = ordersService.createOrders(orders2);
            ordersService.commit();

there is only one row added to database. Any ideas?