Tabbox selectedPanel binding not working

The binding selectedPanel is not working. There are mistake from lang-addon.xml from zkplus package

<annotation>
<annotation-name>default-bind</annotation-name>
<property-name>selectedPanel</property-name> <!-- Change this to selectedPanel instead of selectedTabpanel -->
<attribute>
<attribute-name>save-when</attribute-name>
<attribute-value>self.onSelect</attribute-value>
</attribute>
<attribute>
<attribute-name>access</attribute-name>
<attribute-value>both</attribute-value>
</attribute>
</annotation>