$VAR1 = {
          'operation' => '10',
          'prod_order' => '702164',
          'machine' => 'W01'
        };
$VAR2 = {
          'operation' => '10',
          'prod_order' => '702164',
          'machine' => 'W02'
        };
$VAR3 = {
          'operation' => '10',
          'prod_order' => '702164',
          'machine' => 'W03'
        };
$VAR4 = {
          'operation' => '100',
          'prod_order' => '702164',
          'machine' => 'W03'
        };