</td>
<td class="register_right">
<strong>{%pipe,determineReferalId%}</strong>
- <input type="hidden" name="refid" value="{%pipe,determineReferalId%}" />
+ <input type="hidden" name="refid" value="{%pipe,determineReferalId,makeZeroToNull%}" />
</td>
</tr>