getXXX error?? for XXXX

I am using HashMaps instead of the getXXX and setXXX methods
this is my LoginFormBean

public class LoginFormBean extends org.apache.struts.action.ActionForm {
 
/*
    private int age;
    private String platform;
    private boolean tierView;
    private boolean tierModel;
    private boolean tierController;
    private String name;
    private String story;
    private String email;
    private String gender;
    */
    
    private HashMap attributeMap = new HashMap();
    
    private Map getMap(){
        return attributeMap;
    }
        public HashMap getAttributeMap() {
        return attributeMap;
    }
 
    public void setAttributeMap(HashMap attributeMap) {
        this.attributeMap = attributeMap;
    }
    
    public void setAttribute(String attributeKey, Object attributeValue){
        getMap().put(attributeKey, attributeValue);
    }
    
    public Object getAttribute(String attributeKey){
        Object holder = getMap().get(attributeKey);
        if(holder==null) return "";
        return holder;
    }
 
    public LoginFormBean() {
        super();
    // TODO Auto-generated constructor stub
    }
 
    @Override
    public void reset(ActionMapping mapping,HttpServletRequest request){
        
        setAttribute("tierView",false);
        setAttribute("tierController",false);
        
    }
    
    @Override
    public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) {
        ActionErrors errors = new ActionErrors();
        if ((String)getAttribute("name") == null || ((String)getAttribute("name")).length() < 1) {
            errors.add("name", new ActionMessage("error.name.required", "name"));
        // TODO: add 'error.name.required' key to your resources
        }
        if ((String)getAttribute("age") == null || ((String)getAttribute("age")).length() < 1) {
            errors.add("age", new ActionMessage("error.name.required", "age"));
        // TODO: add 'error.too.small' key to your resources
        }
        /*
        if (Integer.parseInt((String)getAttribute("age")) < 18) {
            errors.add("age", new ActionMessage("error.too.small", "age"));
        // TODO:
        }*/
        if ((String)getAttribute("email") == null || ((String)getAttribute("email")).length() < 1) {
            errors.add("email", new ActionMessage("error.name.required", "email"));
        // TODO: add 'error.name.required' key to your resources
        }
        if ((String)getAttribute("story") == null || ((String)getAttribute("story")).length() < 1) {
            errors.add("story", new ActionMessage("error.name.required", "story"));
        // TODO: add 'error.name.required' key to your resources
        }
        return errors;
    }
}

and here is my jsp:

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Welcome to JavaEdge!</title>
       
    </head>
    <body>
        <%@ include file="header.jsp" %>
        <html:form action="login" method="POST" onsubmit="return(validateLogin(this);">
        
            <table border="1">
                <thead>
                    <tr>
                        <th colspan="3">Enter Information</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td><bean:message key="age"/></td>
                        <td><html:text property="attribute(age)"/></td>
                        <td> <html:errors property="attribute(age)"/></td>
                    </tr>
                    <tr>
                        <td>Name</td>
                        <td><html:text property="attribute(name)"/></td>
                        <td> <html:errors property="attribute(name)"/></td>
                    </tr>
                    <tr>
                        <td>Story</td>
                        <td><html:textarea property="attribute(story)"/></td>
                        <td> <html:errors property="attribute(story)"/></td>
                    </tr>
                    <tr>
                        <td>Email</td>
                        <td><html:text property="attribute(email)"/></td>
                        <td> <html:errors property="attribute(email)"/></td>
                    </tr>
                    <tr>
                        <td>Gender</td>
                        <td> <html:radio property="attribute(gender)" value="male" />  Male
                            <html:radio property="attribute(gender)" value="female"/>  Female
                        </td>
                        <td></td>
                    </tr>
                    
                    <tr>
                    <td>Platforms (from select values)</td>
                    <td>
                        <html:select property="attribute(platform)">
                            <html :-o	 ption value="XML"/>
                            <html :-o	 ption value="MySQL"/>
                            <html :-o	 ption value="Struts"/>
                            <html :-o	 ption value="JSF"/>
                        </html:select>
                    </td>
                    <td> </td>                
                    <tr>
                        <td>Tier Experience on</td>
                        <td>
                            <html:checkbox property="attribute(tierView)"/> View<br/>
                            <html:checkbox property="attribute(tierController)"/> Controller<br/>
                            <html:checkbox property="attribute(tierModel)"/> Model<br/>
                        </td>
                        <td> </td>
                    </tr>
                    <%--   --%>
                </tbody>
                
                
            </table>
            
            <html:submit value="submit"/>
            
        </html:form>
        
    </body>
    <%@ include file="footer.jsp" %>
</html>

The error message that I am getting is