How to make table row bold when printing to pdf

[dimyy]

<table border="1" width="100%" cellspacing="0" cellpadding="5">
      <tbody>
        <tr>
            <th>№</th>
            <th>Name</th>
            <th>Unit</th>
            <th>Quantity</th>
        </tr>
        <tr iterate="{{serviceScopes}}" {{#if isGroup}} style="font-weight: bold;" {{/if}} >
              <td>{{code}}</td>
              <td>{{name}}</td>
              <td>q</td>
              <td>{{quantityInAct}}</td>
        </tr>      
      </tbody>
      </table>

don't work.

After PDF template saving this code transforms to :

<tr iterate="{{serviceScopes}}" {{#if="" isgroup}}style="font-weight: bold;" {{="" if}}="">
              <td>{{code}}</td>
              <td>{{name}}</td>
              <td>q</td>
              <td>{{quantityInAct}}</td>
        </tr>  ​

other attempts to take out the IF also lead to unpredictable results

[yuri]

<table>
  <tbody>
    <tr iterate="{{opportunities}}" class=" {{#if (equal stage 'Closed Won') }} bold {{/if}} ">
      <td></td>
    </tr>
  </tbody>
</table>

In the style field:

tr.bold td {
    font-weight: 600;
}​

The syntax must be valid. Moving helpers inside "..." helps in this case.