Hi,
I am exporting to Excel from rich:dataTable, using the following jar files.

jboss-seam2.1.1
1. jboss-seam.jar
2. jboss-seam-excel.jar
3. jboss-seam-ui.jar
4. richfaces-api-3.3.0.BETA1.jar
5  richfaces-impl-3.3.0.BETA1.jar
6  richfaces-ui-3.3.0.BETA1.jar

uing rech:dataTable in .xhtml page
<h:commandButton  id="export_top" type="submit"  styleClass="submit_button"  value="Export to Excel"         action="#{org.jboss.seam.excel.excelExporter.export('ecform:ecdt')}" />
<rich:dataTable var="ecEntity" id="ecdt" reRender="ecds" sortMode="single" onRowClick="onRowClick(this,#{ecEntity.usrSqlidentity});" onRowDblClick="onRowDblClick(this,#{ecEntity.usrSqlidentity});" value="#{userManagerList.resultList}" rows="30">

But i am getting following error

avax.el.PropertyNotFoundException: /ec_user_grid.xhtml @64,174 action="#{org.jboss.seam.excel.excelExporter.export('ecform:ecdt')}": Property 'excelExporter' not found on type org.jboss.seam.Namespace
javax.faces.el.EvaluationException: javax.el.PropertyNotFoundException: /ec_user_grid.xhtml @64,174 action="#{org.jboss.seam.excel.excelExporter.export('ecform:ecdt')}": Property 'excelExporter' not found on type org.jboss.seam.Namespace

can any one help me..
Thanks in advance..

Vikash srivastava