How about 
my $blahblah = 5;

print "$blahblah\n";
fubar($blahblah);
print "$blahblah\n";

sub fubar {
  $_[0] = 4;
  print "$_[0]\n";
}

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In reply to Re: Passing pointers around by repson
in thread Passing pointers around by Anonymous Monk

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