Something like:
$array[1]->{Contact} = [];
%hash = ( Contact_Tel => '1234',
Contact_Name => 'Mr. Bean');
push @{$array[1]->{Contact}}, \%hash;
$array[1]->{Contact} contains the reference to an empty array.
Since
push requires a 'real' array as its first argument, you have to dereference the reference in
$array[1]->{Contact}.
You do this with
@{...}.
See: here and here for more.
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