...
   test: expr(s) /^\Z/
        {
        my %hash;
        
        @hash{keys %$_} = values %$_ for @{$item{"expr(s)"}};
        return \%hash;
        }
...

##</code><code>##

$HASH1 = {
           x => 1,
           y => 2,
           z => 3
         };