Sorry, if my questions about that are ignorant, but after many hours of testing, I still don't understand the output.

My understanding is that the optimize function should generate multiple outputs similar to this code:


Code:
function run()
{
	set(PARAMETERS|LOGFILE);
	StartDate=20160106;
	EndDate=20160107;
	BarPeriod = 1440;
	LookBack =0;
	int Period;
	int Periods[10] = { 10, 20, 50 };
	int i;	
	while(asset(loop("EUR/USD" )))
	for (i=0;i<3;i++)
  	{
    	Period = Periods[i]; //
    	print(TO_ANY,"Period: %d, ",Period) ;
		
	}
}


When I press "Trade", the log file looks like that

Code:
[1: Thu 07.01.16 00:00] (1.07497)Period: 10, Period: 20, Period: 50,


however the following code :
Code:
function run()
{
	set(PARAMETERS|LOGFILE);
	StartDate=20160106;
	EndDate=20160107;
	BarPeriod = 1440;
	LookBack = 0;
 	int Periods[10] = { 10, 20, 50 };
 
	while(asset(loop("EUR/USD" )))
  	{
    	int Period = Periods[optimize(1,1,3,1)-1];  
    	print(TO_ANY,"Period: %d, ",Period) ;
	}
}


generates:

Code:
[1: Thu 07.01.16 00:00] (1.07497)Period: 10,



I wonder how the optimize function can be used to create multiple variations of the trends. Additionally I would like to know if the optimize function is comparable with the for loop.

Thanks for you patients, jcl :))