Daniel, thank you very much for your answers.
In the example you sent, there is a small error.
protected override void Reset ()
ind_slv.NewSeries (Count); / / Error: count should have been 5000, but was 0
I made a new example. As far as I understand, there are two important things in this case, override NewSeries and the use of LookBack(index) instead of Current Property. The indicator value in this example does not matter, let it be simply the closing price. If my sample is written correctly, I could upload it to the examples (http://www.rightedgesystems.com/TradingSystems.aspx).
At the moment I have NinjaTrader and WealthLab. But they have some disadvantages that are essential for me. So I'm interested in using RE. But before I can start working with RE I have to make sure that I can do whatever I need quickly and easily and get the correct results.