Specify an absolute path in FileOpen function

[arsenico42]

Hi everybody,

I've read the MQL5 documentation about FileOpen function and in the examples it's always specified a relative path (starting from c:\Program Files\MetaTrader 5 Terminal\Tester\Agent-127.0.0.1-3000\MQL5\Files\ folder).

Do you know if it is possible to specify an absolute file path and writing for example in C:\Temp\log.txt?

I've tried specifing path in this way but none of the following invocations works; "h" variable is always -1 :(

int h = FileOpen("C:\\Temp\\log.csv", FILE_WRITE|FILE_UNICODE|FILE_CSV);

int h = FileOpen("C://Temp//log.csv", FILE_WRITE|FILE_UNICODE|FILE_CSV);

int h = FileOpen("C:/Temp/log.csv", FILE_WRITE|FILE_UNICODE|FILE_CSV);

Thanks in advance :)