Hi there,

In your "foreach" loops, you're traversing a list of keys within the hashes and getting back just the value of those keys. Not a reference you can use directly to access the hash. To turn this into such a reference you can do like so:

my $inner = $ret->{$room};
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That is, you lookup the value held in the outer hash, using the key that you're currently looping over. A complete program might look like this:

use strict;
use warnings;
use feature 'say';
my $ret = {     room1 => { tag => 5,  status => 'lazy',   id => 5823 }
+,
                room2 => { tag => 10, status => 'active', id => 1234 }
+,
};

for my $room ( sort keys $ret ) {
        say $room;
        my $inner = $ret->{$room};
        say "\t$_ => $inner->{$_}" for sort keys $inner;
}
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