newbie question: moddn

[Vitaly K. <vi...@ti...>]

Hello,
  I just downloaded the perl-ldap and try to use its functions.
  I have  problem in following code:

  my $result = $ldap->moddn("cn=Tuzik,ou=People,o=tiogatech.com",
                newrdn => "cn=Ttuzzikk I");

  if ($result->code) {
          print "Some error occured while moddn ... \n",
                ldap_error_name($result->code),":",
                ldap_error_text($result->code),"\n";
        }

I get error message:

LDAP_ENCODING_ERROR:C<Net::LDAP> encountered an error while encoding the
request packet that would
have been sent to the server

1)Can you please help me ? What is wrong with this code?
2)Can I change dn "cn=Tuzik,ou=People,o=tiogatech.com" to dn
"uid=12345,ou=People,o=tiogatech.com" with  function moddn ?

Thanks in advance!
                                Vitaly