Why does this EA (in early development) not produce an alert, or an error? - mql4

Question

#property strict
string subfolder = "ipc\\";
int last_read = 0;
int t = 0;
struct trade_message
{
int time; // time
string asset; // asset
string direction; // direction
double open_price; // open
double stop_price; // open
double close_price;// open
float fraction; // fraction
string comment; // comment
string status; // status
};
trade_message messages[];
int OnInit()
{
int FH = FileOpen(subfolder+"processedtime.log",FILE_BIN);
if(FH >=0)
{
last_read = FileReadInteger(FH,4);
FileClose(FH);
}
return(INIT_SUCCEEDED);
}
void OnTick()
{
int FH=FileOpen(subfolder+"data.csv",FILE_READ|FILE_CSV, ","); //open file
int p=0;
while(!FileIsEnding(FH))
{
t = StringToInteger(FileReadString(FH));
if(t<=last_read)
{
break;
}
do
{
messages[p].time = t; // time
messages[p].direction = FileReadString(FH); // direction
messages[p].open_price = StringToDouble(FileReadString(FH)); // open
messages[p].stop_price = StringToDouble(FileReadString(FH)); // stop
messages[p].close_price = StringToDouble(FileReadString(FH)); // close
messages[p].fraction = StringToDouble(FileReadString(FH)); // fraction (?float)
messages[p].comment = FileReadString(FH); // comment
messages[p].status = FileReadString(FH); // status
Alert(messages[p].comment);
}
while(!FileIsLineEnding(FH));
p++;
Alert("P = ",p,"; Array length = ", ArraySize(messages));
}
FileClose(FH);
last_read = t;
FileDelete(subfolder+"processedtime.log");
FH = FileOpen(subfolder+"processedtime.log",FILE_BIN);
FileWriteInteger(FH,t,4);
FileClose(FH);
ArrayFree(messages);
}
The code is in tick function in order to test it before taking it out to a function.
The data.csv file is:
Timestamp
Asset
Direction
Price
Stop
Profit
Fraction
Comment
Status
xxx
yyy
SHORT
13240
13240
13220
0.5
yyy SHORT 13240 - taken half at 13220 and stop to breakeven
U
xxx
yyy
SHORT
13240
13262
13040
1.0
55%
DP
The processedtime.log is not being created.

Answer 1

So 2 problems, both of my own making.
Not skipping the header row, simply remedied by inserting
do f = FileReadString(FH);
while(!FileIsLineEnding(FH));
after FileOpen() (easier than altering my source for data.csv), and
forgetting about the asset part of my structure, thus ensuring my structures got out of sync with my lines!! Remedied by adding messages[p].asset = FileReadString(FH); between messages[p].time = t and messages[p].direction = FileReadString(FH);