Changing Unmanged Order Quantities

[Serac]

I am trying something new, and have a question regarding changing order quantities using unmanaged orders.

Suppose I enter into a long trade via myOrder = SubmitOrder(0,OrderAction.Buy,OrderType.Market,5,0 ,0,"","Long");

So, once myOrder is filled, I am now long 5 units.

Later, if I do this,

ChangeOrder(myOrder,10,0,0);

What will happen? Will NT place a market order for five more units? Even though myOrder is already in a filled state?

If I do this

ChangeOrder(myOrder,1,0,0);

What will happen? NT cannot sell 9 (or 4) units because I have not specified how to sell them.

Nowhere in the NT documentation does it mention how order quantity affects filled orders. Am I missing something?

I want to dynamically change the order quantity (either increase or decrease), without having to manage a million unique IOrder orders (which would be fairly complex).

Thanks!

[NinjaTrader_ChelseaB]

Hello Serac,

It is not possible to change an order that has filled or part filled.

If you try, this will likely result in a rejection message.