#load html file to server
  my $server_dir = $vars{"server_dir"};
  say "server dir is $server_dir";
  my $return1 = createDir( $server_dir, $sftp );
  say "return1 is $return1";
  $sftp->setcwd("/$server_dir")  or warn "setcwd1 failed $!\n";
  $sftp->put( $vars{html_file} ) or die "html put failed $!\n";

  #load css file to server
  $sftp->setcwd("/css") or warn "setcwd2 failed $@\n";
  my $path3 = path( $vars{css_path}, $vars{"css_file"} );
  say "path3 is $path3";
  my $remote_css = $vars{"css_file"};
  $sftp->put( "$path3", $remote_css ) or warn "css put failed $@\n";

  # upload images
  my $image_dir = $vars{"image_dir"};
  say "image dir is $image_dir";
  my $return2 = createDir( $image_dir, $sftp );
  say "return2 is $return2";
  $sftp->setcwd("/$image_dir") or warn "setcwd2 failed $!\n";
  my $return3 = createDir( $vars{remote_dir}, $sftp );
  say "return3 is $return3";
  $sftp->setcwd( $vars{remote_dir} ) or warn "setcwd3 failed $!\n";
  print $sftp->cwd(), "\n";