Goodmorning community,
I am struggling using zorro's file_append and file_appendfront functions.
I have prepared a script to test the 2 functions:

Code:
void storeTrade();
/* Stores all the trades closed this bar
	Use after the algo/Asset loop. Not in the loop	*/

void printTrade(int counter);
int createReRArray(var* ReRarray, int Counter);

#define _storedRER "Data\storedRER.txt"
#define _storedTradeSize 50000 //1.000 trades (1.000 char [50])
#define _sTradeSize 50

char sRow[_storedTradeSize]; 

void storeTrade(){
	
	char sTrade[_sTradeSize];
	string ls, bo = "{", bc = "}";
	
	for(closed_trades){		// Check only phantom trades closed this Bar
		if ((int) TradeBarClose == Bar) {
			if (TradeIsPhantom && TradeIsClosed){
				if(TradeIsShort) ls = "S"; else ls = "L";		
				sprintf(sTrade, "n{%s:%s:%s%i}:%.2f", TradeAsset, TradeAlgo, ls, TradeID, TradeProfit );	
//				file_appendfront(_storedRER, sTrade, strlen(sTrade)+1 ); //<<---------	1			
//				file_appendfront(_storedRER, sTrade, strlen(sTrade) ); 	//<<---------	2			
//				file_appendfront(_storedRER, sTrade, 0); 						//<<---------	3			
//				file_append(_storedRER, sTrade, 0); 							//<<---------	4
//				file_append(_storedRER, sTrade, strlen(sTrade) ); 			//<<---------	5	
//				file_append(_storedRER, sTrade, strlen(sTrade) ); 			//<<---------	6	
				printf("%s", sTrade);
//				printf("Bar:%i - %s", Bar, sTrade);
			}
//	
		}
		else break_trades;
		
	}
}

void run()
{
//	set(LOGFILE); 	
	MaxLong	= 5;
	MaxShort	= 5;
	
	StartDate = 20180101;
	EndDate = 20180102;
	BarPeriod =1;
	Hedge = 5;
	algo("TREND"); 
	LifeTime = (int) random(10);
	if (random(6) > 3) enterLong(); else enterShort();
	enterLong(); enterShort();
	storeTrade();
}



The idea behind the script is to print the same windows output in a file in normal and reverse order.
I have tried all the 6 version listed uncommenting one of the numbered row at the time (remember to delete the file before each run).
My finding is that file_append works, but does not write the EOL so instead of a file of strings a long sequence of char is written.
file_appendfront does not work at all.

I have involved the support and they confirmed that file_appendfront() with length=0 does not work as expected.

Does anybody got some experience using this functions?
Any idea?

Ciao