I am new using perlmodule functions.By using svn:client i am trying to read a file from working directory and copy a file to same directory and add a new file then update and commit it. but i am geeting problems with add function and update -- Is this what i am doing right or wrong if not please help me with right code.

use SVN::Client;
use SVN::Wc;
use SVN::Core;
use SVN::Repos;
use SVN::Fs;
 my $ctx = new SVN::Client(
              auth => [SVN::Client::get_simple_provider(),
              SVN::Client::get_simple_prompt_provider(\&simple_prompt,
+2),
              SVN::Client::get_username_provider()]
              );
my $target ='https://xxxxxxxxxx.org/svn/sandbox/trunk/';
$ctx->cat (\*STDOUT, $target.'script1.txt','HEAD'); 

#reading a file this is working perfect
$ctx->add ("$target.newfile");# i am unable to add a file 
$ctx->copy("$target".'script1.txt',32,"$target".old6);# it is creating
+ a copy of file but i am unable to see in working directory. when i d
+o "svn update" manually from CMD it gets updated and i can see a copy
+ of file.

#$ctx->update("/home/xxxx/trunk/");
my $res = $ctx->commit(["/home/xxxx/trunk/"], 1);
$ctx->update("/home/xxxx/trunk/");
    sub simple_prompt {
      my $cred = shift;
      my $realm = shift;
      my $default_username = shift;
      my $may_save = shift;
      my $pool = shift;

      print "Enter authentication info for realm: $realm\n";
      print "Username: ";
      my $username = <>;
      chomp($username);
      $cred->username($username);
      print "Password: ";
      my $password = <>;
      chomp($password);
      $cred->password($password);
    }
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