Hi,

Take a look at perlop, here you'll get explained the ternary operator and a indication for what is goind wrong here.

The code really says this:

( (exists $hash{$_} and $hash{$_} eq 'on') ? $result = 'OK' : $result 
+) = 'KO';
[download]

And the result of the ternary operator is an assignable value so that it gets to:

With this, it works well

   (exists $hash{$_} and $hash{$_} eq 'on')
      ? ($result = 'OK')
      : ($result = 'KO');
[download]

Regards,