Thank You Dalla,
that was exactly my starting point, but it did not work.
I want to calculate the Rolling Expectancy Ratio. Basically I need the Result of the last N trades the mentioned arrays does not provide such information.

the for(all_trade) macro could be used, but unfortunately its sort the trades from the first opened one. Reversing a growing array is not trivial for my coding capabilities, so I was blessing for some help .

Ciao