@AoHcurrent=(
 
    {
       node  => "ABC",
       link     => "DEF",
       time     => "10:00",
       value      => "100",
    },
    {
       node  => "FGH",
       link     => "IJK",
       time     => "10:00",
       value      => "200",
    },
  );

AoHprevious=
   (
    {
       node  => "ABC",
       link     => "DEF",
       time     => "09:45",
       value      => "10",
    },
    {
       node  => "FGH",
       link     => "IJK",
       time     => "09:45",
       value      => "50",
    },
  );