Understanding commissions

[lookOutBelow]

I'm having an issue that I cannot figure out.

I've set up commissions and they mostly properly calculate and then display in Account Performance of my strategy. My commission is set up as $1.51 per side and that is plugged into Tools > Options > Commissions and into the proper categories.

These work fine as long as I am buying/selling one contract. But let's say that I have 3 contracts, and I send an order to flatten my position with the following code:

ZN_flattenOrder = SubmitOrder(0,OrderAction.Sell,OrderType.Market,Positions[0].Quantity,0,0,"","ZN_flattenOrder");

It only reports (the Executions tab) a single commission of $1.51 and not $4.53.

How do I change this behavior?

Thanks

[NinjaTrader_Brandon]

Hello lookOutBelow,

Thanks for your post.

You will need to set up a tiered commission.

Below I have provided a link to our NinjaTrader 7 Tips - Setting Commission Values video.

https://www.youtube.com/watch?v=8FMVuiqP10U

Below I have provided a link to the 'How to add a tiered commission rate'
section of the help guide.

http://ninjatrader.com/support/helpGuides/nt7/?commission_tab.htm