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$ cat u.pl
use strict;
...
print "a hash expands to a list: ", Dumper(%hash), "\n";

print "pass the hash as a ref: ", Dumper(\%hash), "\n";

$ perl u.pl
a hash reference: $VAR1 = {
...
pass the hash as a ref: $VAR1 = {
          'amountSubmitted' => 0
        };

$ perl u.pl
array reference: $VAR1 = [
...
          'first value',
          'second value'
        ];