<div class="listcheck">
<div>
<label for="chk1">
<input class="boxCheckbox" id="chk1" type="checkbox" name="advice[]" value="offer" />
Первое значение
</label>
</div>
<div>
<label for="chk2">
<input class="boxCheckbox" id="chk2" type="checkbox" name="advice[]" value="presentation" />
Второе значение
</label>
</div>
<div>
<label for="chk3">
<input class="boxCheckbox" id="chk3" type="checkbox" name="advice[]" value="question" />
Третье значение
</label>
</div>
</div>
<div> <label for="prdchk[[+idx]]"> <input class="boxCheckbox" id="prdchk[[+idx]]" type="checkbox" name="product[]" value="[[+pagetitle]]" [[!+fi.product:FormItIsChecked=`[[+pagetitle]]`]] /> [[+pagetitle]] </label> </div>
<b>Продукты:</b> <br />[[+product]]<br />
[[+product:eq=``:then=`[[+product]]`]]