FTP change directory

Hello,
I am trying to FTP a file from one machine to another server.  However, it is unable to change the directory.  I have following so far-

my $ftp_remote_addr='abc';
my $ftp_user = 'bxyz';
my $ftp_pass ='lmn';
my $ftp_cwd_path = "";
my $ftp_put_filename= 'C:\\abc\\abc\\123.txt';
#############################################

my $ftp = Net::FTP->new($ftp_remote_addr, Debug => 0) ||
  die "Connect to $ftp_remote_addr failed: $@";
 $ftp->login($ftp_user, $ftp_pass)  or die "Cannot login ", $ftp->message;
   
 chdir("/ftproot/test/")
   or die("Can't change to dir $!\n");
#$ftp->cwd($ftp_cwd_path) or die "Cannot change working directory ", $ftp->message;
  print $ftp->pwd();


$ftp->put($ftp_put_filename) or die "Failed to transfer file ", $ftp->message;
$ftp->quit;

Error- cannot change working dorectory
for pwd- I get / as output
Please let me know where I am going wrong.

Thanks,