use strict;
use warnings;

my $address = 'myemail@whatever.com';
my $subject = "Comments Version: $version  ID: $ID";

system( "mail $address -s '$subject' < blah6.txt" ) == 0
    or die "mail failed:  $?";


##</code><code>##

Variable "$ID" is not imported at myscript.pl line 137.
Variable "$version" is not imported at myscript.pl line 137.
Possible unintended interpolation of @whatever in string myscript.pl line 154.
Possible unintended interpolation of @whatever in string at myscript.pl line 154.
Global symbol "$ID" requires explicit package name at myscript.pl line 137.
Global symbol "$version" requires explicit package name at myscript.pl line 137.
Global symbol "@whatever" requires explicit package name at myscript.pl line 154.
Global symbol "@whatever" requires explicit package name at myscript.pl line 154.
Execution of myscript.pl aborted due to compilation errors.