I want to do the following: 
#!/usr/misc/bin/perl5 -w
use strict;

my $blahblah = 5;
my $ref_to_blahblah = \$blahblah;

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

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

[download]
Right now, the output is:
5
4
5
I want to have fubar() change $blahblah, so that the ouput is 5-4-4. I've looked around and I can't find a way to do this. Help!

In reply to Passing pointers around by Anonymous Monk

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