arrays formitretriever still broke?

[[!FormIt? 
    &hooks=`redirect` 
    &store=`1` 
    &redirectTo=`16`
]]
<form action="" method="post" class="form">
    <label>
        Locaties:* [[!+fi.error.location]]
        <input type="hidden" name="location[]" value="" />
    </label>
    <ul>
      <li>
        <label><input type="checkbox" name="location[]" value="amsterdam" 
[[!+fi.location:FormItIsChecked=`amsterdam`]] /> amsterdam</label>
      </li>
      <li>
        <label><input type="checkbox" name="location[]" value="new york" 
[[!+fi.location:FormItIsChecked=`new york`]] /> new york</label>
      </li>
    </ul>
<input type="submit" value="Next" />
</form>

[[!FormItRetriever]]
The value = [[+fi.location]]
<form action="" method="post" class="form">
<input type="hidden" name="location[]" value="[[+fi.location]]" /> 
</form>