use strict;
use warnings;
use XML::Simple;use Data::Dumper;
my $file = './test.xml';
my %tmp = ( 'A' => [ [1] ]);
XMLout(\%tmp,outputfile=>$file);
%tmp = %{XMLin($file,forcearray=>['A'])};
warn Dumper(\%tmp);

%tmp = ( 'A' => [ [1,2] ]);
XMLout(\%tmp,outputfile=>$file);
%tmp = %{XMLin($file,forcearray=>['A'])};
warn Dumper(\%tmp);