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