Check if price drop condition

[onlinebusiness]

Hi everyone

I want to have a condition that checks last before if there was a huge Drop or Pump in price.
So I would have a double that gives me an input that I can specify in strategy parameters .
Let's say my double is PriceChangeLastBar: 20
So my condition will check at the beginning of each bar if the price has dropped or pumped by 20 in the last bar

is there anyway to make this code?
Thanks

[NinjaTrader_BrandonH]

Hello onlinebusiness,

Thanks for your post.

To clarify, you want to check if the current Open price (Open[0]) is greater than or less than the previous Close price +/- 20 Ticks. Is that correct?

Something you could do is create a condition that checks if the current Open price (Open[0]) is Greater than or Less than the previous close price (Close[1]) +/- a tick offset (PriceChangeLastBar).

For example, say PriceChangeLastBar is equal to 20 and you want to check if the current Open price is Greater than the previous Close price + 20 ticks. See the attached screenshot showing what this condition would look like in the Strategy Builder.

You could set up a similar condition on your end using the Strategy Builder and click the 'View code' button to see the generated syntax.

See the help guide documentation below for more information.

Working with the Strategy Builder: https://ninjatrader.com/support/help...gy_builder.htm

Please let me know if I may assist you further.

[onlinebusiness]

Hi Brandon, thanks for the help, it worked somehow

I put it something like this:

protected override void OnBarUpdate()
        {

            /// LONG Trades
            if ( (Open[2] + (PriceUp * TickSize) > Open[0])
                // Trading Hours Before 15 PM and After 17 PM
                && ((Times[0][0].TimeOfDay >= new TimeSpan(17, 10, 0))
                || (Times[0][0].TimeOfDay < new TimeSpan(14, 00, 0)))
                )
            {    
                EnterLong(Contracts, "Long");
                justEntered = true;​​

PriceUp == 100

Issue whenever I enable the strategy, it get disabled instantly on the chart.
On The logs I get this error in the screenshot attached

And if I remove the condition:

if ( (Open[2] + (PriceUp * TickSize) > Open[0])

The strategy work just fine.

how can I make it work while I keep this condition? I must use that condition

[NinjaTrader_BrandonH]

Hello onlinebusiness,

Thanks for your note.

This error message indicates that you are trying to access a BarsAgo value in your script that has not yet been processed.

As one example, calling Close[1] when CurrentBar is 0 (the very first bar) will cause this error. The reason for this is because there will not be a bar ago; essentially there is not enough data at bar 0 to look back one bar.

A CurrentBar check should be added to your script to ensure that there are enough bars processed for the BarsAgo value you are accessing. If you have multiple data series added to your script, you would need to use a CurrentBars check.

See the example of a CurrentBar check below.

if (CurrentBar < 10)
    return;

This would check to make sure that 10 bars have been processed before the script begins its calculations.

See the help guide documentation below for more information.

CurrentBar - https://ninjatrader.com/support/help...currentbar.htm
CurrentBars - https://ninjatrader.com/support/help...urrentbars.htm
Make sure you have enough bars - https://ninjatrader.com/support/help...nough_bars.htm

Let us know if we may assist further.