It is allowed to use variables in the check:

  <tr>
    <td>storeExpression</td>
    <td>javascript{var date = new Date();date.getDate() + 
        '-' + (date.getMonth() + 1) + '-' + date.getFullYear();}
    </td>
    <td>currentDate</td>
  </tr>

  ...

  <tr>
    <td>assertTextPresent</td>
    <td>Date of today: ${currentDate}</td>
    <td></td>
  </tr>