Why Position.MarketPosition not updated ?

[judysamnt7]

I employed the following code to reverse my positions when I click a button within OnButtonClick() method.
It works like this: if account's position is long 1 contract, it reverses the position by placing an order of 2 contracts sell short. And vice versa when MarketPosition = Short.
However , the result wasn't as expected. If I have 1 long position and sell 2 short, it resulted to 1 short. there is no issue. But in next step, when I continue to reverse again, it once again short another 2 contract short instead of buying 2 contracts . (Looks like Position.MarketPosition not updated from Long to short) . Anything I did wrong here ?

Thanks !

{
if (Position.MarketPosition == MarketPosition.Long)
{

{
ChartControl.Dispatcher.InvokeAsync((Action)(() => {

Account a = ChartControl.OwnerChart.ChartTrader.Account;

int quantity0 = Positions[0].Quantity * 2;

Instrument instr = ChartControl.OwnerChart.ChartTrader.Instrument;

Order order0 = a.CreateOrder(instr, OrderAction.Sell,
OrderType.Market, OrderEntry.Automated, TimeInForce.Day, quantity0, 0, 0, "", "Entry1",
Core.Globals.MaxDate, null);


a.Submit(new[] { order0 });


}
));
}

}

if (Position.MarketPosition == MarketPosition.Short)

{
ChartControl.Dispatcher.InvokeAsync((Action)(() => {

Account a = ChartControl.OwnerChart.ChartTrader.Account;
int quantity1 = Positions[1].Quantity * 2;

Instrument instr = ChartControl.OwnerChart.ChartTrader.Instrument;

Order order1= a.CreateOrder(instr, OrderAction.BuyToCover,
OrderType.Market, OrderEntry.Automated, TimeInForce.Day, quantity1, 0, 0, "", "Entry3",
Core.Globals.MaxDate, null);


a.Submit(new[] { order1 });

}
));
}

}

[NinjaTrader_ChelseaB]

Hello judysamnt7,

Orders placed directly to an account using the Addon approach will not update strategy native methods such as OnOrderUpdate(), OnExecutionUpdate(), or OnPositionUpdate() and will not update the strategies position, they will only update the account position.

Attach an event handler to the Account.PositionUpdate event if you want to capture the account position updating.

https://developer.ninjatrader.com/docs/desktop/positionupdate

Use native strategy methods if you want the strategy position to update.

https://developer.ninjatrader.com/docs/desktop/order_methods

Below is a link to examples of submitting orders with button clicks.

https://support.ninjatrader.com/s/article/Chart-Order-Buttons

[judysamnt7]

thanks Chelsea. What's exactly Addon you referred to and what's methods are categorized as Non Addon? what's main pro and con between the two approach

[NinjaTrader_ChelseaB]

Hello judysamnt7,

The Addon approach sends and received orders from an Account object with Account.CreateOrder() and Account.Submit().
This works in any script such as an indicator, market analyzer column, or custom addon, but will not update strategy native methods.

Native Strategy methods can only be used in a NinjaScript Strategy. EnterLong(), ExitShortStopLimit(), SetStopLoss(), OnOrderUpdate(), OnExecutionUpdate(), OnPositionUpdate() are all native strategy methods.

[judysamnt7]

So in my case, to reverse existing long positions on my account, I need use PositionsAccount[0].MarketPosition == MarketPosition.Long instead of Position.MarketPosition == MarketPosition.Long ?

Thanks !

[NinjaTrader_ChelseaB]

Hello judysamnt7,

Yes, if the order is being submitted to the same account as selected for the strategy that would work.