Dear monks i have a code to replace the hash keys against another hash value it replace the keys but it replace the first match of the key only it cant replace the second time the same key come means it shift the key value pair but i want to replace that key also this is my code

#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
use XML::Simple;
my %xhash = ('a' => {
                 'b' => {
#################################################
                        'e' => 'E',
                        'c' => 'V',
                        'c' => 'C',
                        'content' => 'B'
#################################################
                      },
                 'content' => 'A
',
                 'd' => 'D'
               });

my %c_hash=('a' => {
                   'addval' => {
                                 'b' => {
                                          'addval' => {
                                                        'e' => {
                                                                 'addv
+al' => {},
                                                                 'repv
+al' => '5'
                                                               },
                                                        'c' => {
                                                                 'addv
+al' => {},
                                                                 'repv
+al' => '3'
                                                               }
                                                      },
                                          'repval' => '2'
                                        },
                                 'd' => {
                                          'addval' => {},
                                          'repval' => '4'
                                        }
                               },
                   'repval' => '1'
                 });

my %repl;  # lookup table: a => 1, etc.
traverse(\%c_hash,
         sub {
             my ($key, $val) = @_;
             $repl{$key} = $val;
         },
         "collect"
);
 #print Dumper \%repl;  # debug

traverse(\%xhash,
         sub {
             my ($key, $val, $href) = @_;
             if (exists $repl{$key}) {
                 my $newkey = $repl{$key};
                 $href->{$newkey} = $val;
                 delete $href->{$key};
             }
         },
         "replace"
);
print Dumper \%xhash;


sub traverse {
    my ($hash, $callback, $mode) = @_;
    return unless ref($hash) eq "HASH";
    for my $key (keys %$hash) {
        my $val = $hash->{$key};
        if (ref($val) eq "HASH") {
            traverse($val, $callback, $mode);
            if ($mode eq "collect") {
                if (exists $val->{repval}) {
                    $callback->($key, $val->{repval});
                }
            }
        }
        if ($mode eq "replace") {
            $callback->($key, $val, $hash);
        }
    }
}


_output_
$VAR1 = {
          '1' => {
                   '4' => 'D',
                   'content' => 'A
',
                   '2' => {
###################################################
                            '3' => 'C',
                            'content' => 'B
',
                            '5' => 'E'
###################################################
                          }
                 }
        };
[download]

but my required output is

_Required output_
$VAR1 = {
          '1' => {
                   '4' => 'D',
                   'content' => 'A
',
                   '2' => {
###############################################
                            '3' => 'C',
                            '3' => 'V'
                            'content' => 'B
',
                            '5' => 'E'
###############################################
                          }
                 }
        };
[download]

please help me to clear that error

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