How to get Struts select tag's current selected value/id

[Arun Rt]

How to get Struts select tag's current selected value/id

my code is

			<s:div>
				<s:select name="cityId" list="cityList" listKey="cityId" listValue="cityName" headerKey="0" headerValue="New City" label="City"></s:select>
			</s:div>
			<s:div>
				<a href="<s:url action="editCityLink"> <s:param name="cityId" value="%{cityId}"></s:param></s:url>">Edit</a>
			</s:div>

Here value="%{cityId}" shows 0 , how to get current selected id