Not problem with the MACD Histogram. I plan to add several new indicators till the beginning of September.
To Nordic12
In FSB you can specify the market entry point into the first slot. It can contain an indicator that sets one entry price as: Moving Average, Bar Opening ... or two prices Bollinger Bands, Previous High Low ...
the same is for the Exit point, but using Bar Closing you can use close logics also.
I can suggest you this for you strategy:
[Closing point of the position]
Bar Closing
Exit the market at the end of the bar
Base price - Close
[Closing logic condition]
RSI
The RSI is lower than the Level line
Smoothing method - Simple
Base price - Close
Smoothing period - 9
Level - 30
Use previous bar value - No
[Closing logic condition]
Previous High Low
The bar closes below the previous Low
Base price - High & Low
In this case the closing is at the end of the bar, but only if RSI drops below 30 or the price drops below previous low. I think this is what you ask for.