Understanding IdataSeries .

[dafonseca]

I am trying to use the foollowing condition:
if (CrossBelow(Highs[1][0], SMA (BarsArray[1],SMACycle)[0],1))

compiler shows me this error;
argument 2 cannot convert from double to NT idataseries?

How to fix it and what does this error means?

[NinjaTrader_ChelseaB]

Hi dafonseca,

Highs[1][0] has a bars ago value '[0]' which means this will return a double that is the value of the SMA on the current bar. The same is true of SMA(BarsArray[1],SMACycle)[0].

This means that you are trying to detect when a double value (which does not change) crosses another double value (which also will not change). In other words there is no data series to detect a cross on as a cross detection looks to see if the first value from a bar ago is less than the second value a bar ago and then the first value from the current bar is greater than the second value from the current bar.

The crossabove/crossbelow needs at least one dataseries but I think you want two dataseries.

Try instead:

if (CrossBelow(Highs[1], SMA(BarsArray[1],SMACycle),1))