Tks for your help but this doesn’t solve the problem.

If You add aonther field to the fom (as in the example) it goes into a js error (e.g. adding an input hidden field).

<section id=”check-box”>
<p>Checkboxes allow the user to select multiple options from a set.</p><br />
<p>If you have multiple options appearing in a list, you can preserve space by using checkboxes instead of on/off switches.</p><br />
<p>If you have a single option, avoid using a checkbox and use an on/off switch instead.</p><br />
<br />
<div class=”check-box-container-light”>
<input name=”C0″ type=”hidden”/>
<smart-check-box checked onChange=”applica(this)” name=”C1″></smart-check-box>
<smart-check-box name=”C2″></smart-check-box>