Unable to get values of form fields using FormBean-Struts

Hi,
I am using Struts 1.2.x and wish have mmediate help on the following issue.

Issue : Unable to get values of form fields using FormBean using Struts

Details :
—-> JSP page having 3 fields Cityname, state name and country name. having HTML tags as follows :

<form action=””../CityAction.do?action=submitCityMasterData”” name=”form2″ method=”post”>

——> Input type line
<input type=”button” value=”Submit” class=”g_button” onclick=”submit()” />

—————————————-
struts-config.xml file has following entries for beans and mappings :

<form-beans>
<form-bean name=”cityMasterFormBean” type=”com.buhariwalas.app.form.cityMaster.CityMast erFormBean”/>
</form-beans>

<action-mappings>
</action>
<action path=”/CityAction”
type=”com.buhariwalas.app.action.cityMaster.CityAc tion”
parameter=”action”
scope=”request”
name=”cityMasterFormBean”>
</action>

————————–

can anyone tell me why the following code in SubmitCityAction.java prints null values :

public class SubmitCityAction {
private ActionForward nextPage = null;
private CityMasterFormBean cityForm = null;
/*———————————————————————–*/
public ActionForward submitCityMasterData(ActionMapping mapping, ActionForm form,
HttpServletRequest request,HttpServletResponse response){

private CityMasterFormBean cityForm = null;

cityForm = (CityMasterFormBean)form ;

System.out.println(“City Form Values = “+
“\ncity = “+cityForm.getCity_name()+”,”+
“\nstate = “+cityForm.getState_name()+”,”+
“\ncountry = “+cityForm.getCountry_name() );

nextPage = mapping.findForward(“mainPage”);

return nextPage;
}
}