Thanks Dalla for your answer.
I also added LogNumber = Command[2] and my numbers to command line to identify Log files and avoid overwriting.

Code:
"c:program filesZorroZorro.exe" -run myscript -a USD/CAD -i 1 -i 2 -i 1
"c:program filesZorroZorro.exe" -run myscript -a USD/CAD -i 3 -i 4 -i 2
"c:program filesZorroZorro.exe" -run myscript -a EUR/USD -i 1 -i 2 -i 1
"c:program filesZorroZorro.exe" -run myscript -a EUR/USD -i 3 -i 4 -i 2