my @indices_of_myhash_key_info_array
    = 0 .. $#{$myHash{$key}{info}};

my @two_element_arrayrefs_with_sortkey_and_data
    = map {
        [ split /:/, $myHash{$key}{info}[$_], 2 ] 
    } @indices_of_myhash_key_info_array;

my @two_element_arrayrefs_sorted_by_sortkey
    = sort {
        $a->[0] <=> $b->[0]
    } @two_element_arrayrefs_with_sortkey_and_data;

my @data_element_only_sorted_by_sortkey
    = map {
        $_->[1] 
    } @two_element_arrayrefs_sorted_by_sortkey;

for (@data_element_only_sorted_by_sortkey) {
    print "$_,$key";
}