Error trying to compare two numbers

[UltraNIX]

Whenever I try to compile a strategy, it gives me an error because of this simple condition:

Low[0] < Bollinger(LSBBndStDev, LSBBndPeriod).Upper

Where LSBBndStDev = BolingerStDev and LSBBndPeriod = BolingerPeriod

Error message:

Operator '<' cannot be applied to operands of type 'double' and 'NinjaTrader.NinjaScript.Series<double>'

A workaround would be to use:

CrossBelow(Low, Bollinger(LSBBndStDev, LSBBndPeriod).Upper, 1)

But as I tested this on the chart, it does not produce a desired outcome. For example, if price is at lower band, I enter long trade and set exit CrossBelow(Low, Bollinger(LSBBndStDev, LSBBndPeriod).Middle, 1), I expect it to exit on the next bar if Low[0] < Middle band. But it doesn't. It goes up, touches Upper band, and only exits, when it drops below Middle band again. This is not acceptable.

[s.kinra]

Hello UltraNIX,
Modify your code as:

Low[0] < Bollinger(LSBBndStDev, LSBBndPeriod).Upper[0]

This is required because Bollinger Band Upper is a double series & Low[0] is a double i.e. low of current bar so you must compare BB upper band value at current bar.
Hope it helps!

[NinjaTrader_BrandonH]

Hello UltraNix,

Thank you for your post.

s.kinra is correct. Both Low[ ] and Bollinger( ).Upper[ ] are Series<double> objects so your code would need to be adjusted so that Bollinger( ).Upper includes a barsAgo reference for the current bar. The code would look something like this.

Low[0] < Bollinger(LSBBndStDev, LSBBndPeriod).Upper[0]

Please see this help guide link for more information about the Bollinger Band - https://ninjatrader.com/support/help...tsub=Bollinger

Let us know if we may assist further.

[UltraNIX]

Thank you both, s.kinra and NinjaTrader_BrandonH, it worked!