hi, i am trying to replace the following line in around 100 xml files :- 
                                     <value>javascript:var x=window.op
+en('http://v3vi.click4assistance.co.uk/c4a.aspx?AccNo=Inter12109&amp;
+IDENT=US-x&amp;Target=General&amp;Country=Singapore','_blank','menuba
+r=no,location=no,resizable=yes,scrollbars=no,status=no');</value>    
+                                </item>
"

[download]
I want to replace IDENT=US-x with IDENT=UK-x in all files ,only the value x is different in al files. I am trying to use the following code for it but I am not able to do it :- 
#!/usr/bin/perl
use strict;
use File::Find;
use Tie::File;
my $input="C://data";

my $logfile="C:\log.txt";

find(\&filenames, $input);
sub filenames() 
{
    
    if (-f $File::Find::name) 
    {

   my $file=$File::Find::name;

    if($file=~m/\/data\//)
        {
        
    open(FILE, "$file");
            my @filedata=<FILE>;
            close(FILE);
            my $datalength = scalar(@filedata);
            my $DCRContent="";
            for (my $i=0;$i<$datalength; $i++)
            {                                     

                if($filedata[$i]=~/(.*)(http:\/\/v3vi.click4assistance
+.co.uk\/c4a.aspx\?AccNo=Inter12109&amp;IDENT=)(.*)(','_blank)(.*)/i)
                {
                    print "$3 \n";
                    
                    my $orig=$3;
                    print "$orig \n";

                    $orig=~ s/US/UK/;
                    print "The resulting value is : $orig \n"; 
                    $filedata[$i] = $1.$2."$orig".$4.$5;
         open(FILEOUTS,">>$logfile") or die("Opening file failed");
          print FILEOUTS $file."\t"."\n";
          close(FILEOUTS);
               
                }
            }
 

open(FILEOUT,">$file") or die("Opening file failed");
print FILEOUT @filedata;
close FILEOUT;

          
            }
    
        }
         
     }

[download]
basically i am able to replace us with UK and store it in $orig variable but with the next line "$filedata$i = $1.$2."$orig".$4.$5; " the entire line gets deleted except "IDENT=US-x&Target=General&Country=Singapore'" ,so how to really get the combined output ,i am bit new to perl so may be i am making a simple mistake ,i request the experts to pls guide regarding this issue , thanks in advance

In reply to regex issue by rahulgsp83

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