Yes. Note that the second arrow is unneeded, due to the double-subscript rule of dereferencing: 
my $crd = $ref->{$key}{NAME};
$ref->{$key}{NAME} = $new_name;

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If you use strict and use warnings, then Perl will spot many invalid uses rather than silently converting them to symbolic references. See also perlreftut.

In reply to Re: Assigning value through references by AK108
in thread Assigning value through references by Anonymous Monk

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