Thanks @Juanj very nice to reply and thanks for your time and work 😉 Absolutely no offense for my replies :

I understand the system implement or “deplement” if the system on the last trades is worst than all but changing the value can get better but worst too ?

The only possibility to know is to test but to have a losing trade too and not sure (or with good probablity) to implement or deplement will ameliorate the probability to have a next winning trade

Moreover generally the parameter where the best we obtain with a backtest and changing the valuex will result in choosing a worst combinaison of values

And to conclude determining that a valuex of 12 the 4 april doesn’t mean it will be the best value for the 12 april for example as it depends on cycle as showing on the works of Goertzel notably

What’s your point of vue ?

Thanks