Thanks,
I spend about 2/3 hour to monitor the script and its done whitout any error message. But, some of the data are not changes as per requirements. As example, the 2 last character of lines must be integer, if not then changes to default values ("00")

#from my script
...

if ($dd !~ /\d\d$/ || $dd =~ /<u$/ ) {
      $dd =~ s/..$/00/g;
}

...
[download]

But, the script skips on that case and once I test again on small files, it done..