In Condition you compare two values, and in case of crossover - 4 values. As a form of data, indicators are arrays with values where the keys of these arrays are candle ID's (candle's number relative to the current candle which is 0). Here I wrote something that can be helpful: http://fxdreema.com/documentation/getti ... indicators
And this is for crossovers, but I think I will revise the crossover method in future: http://fxdreema.com/documentation/proje ... er%20works