my %struture = (
                
    '1' => {
          'field1_statement1' => 'value',
          'field2_statement1' => 'value'
             
         },
    
    '2.1' => {
          
          'field1_statement2' => 'value',
          'field2_statement2' => 'value',
          'field3_statement2' => 'value'
          
         },
    
    '2.2' => {
          
          'field1_statement2' => 'value',
          'field2_statement2' => '',
          'field3_statement2' => 'value'
          
         },
    '3.1' => {
               
        'field1_statement2' => 'value'
             }
);