Cannot find bean in any scope

I get the Error below when i click on a button in the browser ( i have pasted the snippet code below the error )

javax.servlet.jsp.JspException: Cannot find bean regionName in any scope
      at org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:938)
      at org.apache.struts.taglib.bean.WriteTag.doStartTag(WriteTag.java:298)
      at jrun__jsp__customer__edit2ejsp16._jspService(jrun__jsp__customer__edit2ejsp16.java:760)
      at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)


In my JSP  ( Edit.jsp ) the regionName is defined as below

                    <td class="label"><bean:message key="customer.add.label.region"/>:</td>
                    <td><bean:write name="regionName"/></td>


In my Action class ( CustomerAction.java ) the regionName is set as below

request.setAttribute( "regionName", "US" );


I am not an expert in Struts, so be a little detail in your explaination. Any help is appreciated

thanks
naveen