change the name of the input fields into array on Appendgrid

I wanna ask about how to change the input name in the appendgrid

as on the image above i have the select input as "Sub Program" which the name is "tblAppendGrid_subprogram_1" and below the input the name of the input field is "tblAppendGrid_subprogram_2".

With the case above i wanna ask about how to change the names of the input fields into "tblAppendGrid_subprogram[]"

some codes of the Appendgrid below

 $(function() {
      $('#tblAppendGrid').appendGrid({
        caption: 'Detail Penerimaan dana',
        maxRowsAllowed: 3,
        initRows: 1,
        columns: [
          { name: 'subprogram', display: 'Sub Program', type: 'select',
          ctrlOptions:
              <?php echo $subprogram;?>
          ,ctrlAttr: { maxlength: 100 }, ctrlCss: { width: '100%'},ctrlClass: 'form-control' },
          { name: 'sumberdana', display: 'Sumber Dana', type: 'select',
          ctrlOptions:
              <?php echo $sumberdana;?>
          ,ctrlAttr: { maxlength: 100 }, ctrlCss: { width: '100%'},ctrlClass: 'form-control' } ,
          { name: 'kategori', display: 'Kategori', type: 'select',
          ctrlOptions:
              <?php echo $kategori;?>
          ,ctrlAttr: { maxlength: 100 }, ctrlCss: { width: '100%'},ctrlClass: 'form-control' },
          { name: 'jumlah', display: 'Jumlah',ctrlClass: 'form-control' },
          { name: 'catatan', display: 'Catatan',ctrlClass: 'form-control' }
        ],
        hideButtons: { moveUp: true, moveDown: true }

      });
    });

Thank you in advance