my $ftp_dir1 = "\"ONE TWO Three\"";
my $ftp_dir1 = 'ONE TWO Three';
my $ftp_dir1 = '"ONE TWO Three"';
my $ftp_dir1 = "ONE\ TWO\ Three";
$ftp->cwd('ONE TWO Three') or die "Can't go to $ftp_dir1: $!";