<zk>
    <zscript><![CDATA[
String[] data = new String[10];
for (int i = 0; i < data.length; i++)
	data[i] = "option " + i;


ListModelList model = new ListModelList(data);
    ]]></zscript>
    Please click the button and you shouldn't see any exception
    <button label="clean model">
    	<attribute name="onClick">
    	
    	// reset model
    	listbox.setModel(null);
    	</attribute>
    </button>
    <listbox id="listbox" model="${model}" onSelect="">
    	<listhead><listheader label="column" sort="auto"/></listhead>
    </listbox>
    
</zk>