如何在jQuery Bootgrid中默认选择几列

<table id="myTable" class="table table-condensed table-hover table-striped">
  <thead>
    <tr>
      <th data-column-id="id" data-type="numeric">ID</th>
      <th data-column-id="name">Name</th>
      <th data-column-id="email">Email</th>
      <th data-column-id="phone">Phone</th>
    </tr>
  </thead>
  <tbody>
    <!-- 表格数据 -->
  </tbody>
</table>

$(document).ready(function() {
  var grid = $("#myTable").bootgrid({
    selection: true, // 启用选择功能
    multiSelect: true, // 允许多选
    rowSelect: true, // 允许选择行
    keepSelection: true, // 保持选择状态
    selected: [0, 2] // 默认选择第一列和第三列
  });
});