Dynamic Column in rich:dataTable ?

[Dev Sushant]

Hi,
I am stuck with a simple problem,

I have to populate a richfaces dataTable where columns are fetched from database as String.
I tried with

<rich:datatable> <a4j:repete value="#{HeadController.heads}" var="head"> <h:column> <f:facet name="header"> <h:outputText value="#{head}"/> </f:facet> <h:outputText value="#{head}"/> </h:column> </a4j:repete> </rich:dataTable>

** Avoid spell mistakes if any

and guess what? it shows an empty table with No Column at all.

Please suggest

[Dev Sushant]

<rich:panel header="Monthly Roll"> <rich:dataTable value="#{MonthlyGrossController.heads}" var="hd"> <rich:column> <f:facet name="header"> <h:outputText value="#{hd}"/> </f:facet> <h:outputText value="#{hd}"/> </rich:column> </rich:dataTable> </rich:panel>

And trying with this only prints rows, and No column header