why ftplogger doesn't work?

[Zer4tul]

I've downloaded ftpservertool.ini, and put it into the ftplogger's dir, edited it for ftplogger. And I've added the following line into ioftpd.ini, too:
onUploadComplete = EXEC ..\scripts\ftplogger\FTPlogger.exe %FILE

I'm sure the path of ftplogger is correct. I wanna it check the files when they are uploaded. But it seems as if it doesn't work. Can somebody tell me why? THX