$letter = 'Oops';
$number = ";print 'You have been hacked!';"; 

my $result = eval "\$$letter$number";
[download]

Eval (and symbolic references) are dangerous - that print could have been rf -rm /*. Just don't do it.... Typo intentional.

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print