Today I found there is problem in my code for the combobox.

here is my purpose:
I'd like to ajax update the label which displaying which I select from the combobox.

codes are:
<rich:comboBox value="#{comboBean.value}" suggestionValues="#{comboBean.suggestion}" >
<a4j:support event="onselect" ></a4j:support>
</rich:comboBox>
<a4j:outputPanel ajaxRendered="true">
<h:outputText value="#{comboBean.value}" id="combo_value"/>
</a4j:outputPanel>

the output text will not display anything whatever I select in the combobox.


But I found it's okay if I associated the suggestions value through by <f:selectItems>

Am I sth wrong in comboBox ???