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print Dumper($coordinates->{"AC"}{"132"}{"0"}{"coords"});
$VAR1 = {
...
                   'name' => 'Ygeo'
                 }
        };

print Dumper(%{$$coordinates{"BD"}{"132"}{"0"}{"coords"}});
$VAR1 = '1';
...
          'value' => '5953375.013',
          'name' => 'Ygeo'
        };

$hashref   # HASH(x183e2e8)
%($hashref}   # %{HASH(x183e2e8)}
%$hashref   # %{HASH(x183e2e8)}

$$hashref{$key1}{$key2}{$key3}   # = scalar value

$$hashref{$key1}{$key2}{$key3}   # HASH(0x18b9df8)
$hashref->{$key1}{$key2}{$key3}   # HASH(0x18b9df8)
%($$hashref{$key1}{$key2}{$key3}}   # 1HASH(0x18b9e58)2HASH(0x18b9e88)

%($hashref{$key1}{$key2}{$key3}}   # Global symbol %hashref requires e
+xplicit package name
%$hashref{$key1}{$key2}{$key3}   # syntax error