_FTP_DirPutContents refresh local folder

[rootx]

I built a small ftp client in my application but if I add a new file does not detect it, I have to restart my application to view it, 

EX:

$FTPUpload = _FTP_DirPutContents($FTPConnect, $ftpinilfolder, $ftpinirfolder, 1)

how can I force the FTP function to re-read the contents of the local folder?

Thanks.