Submiting dynamic textareas using
<netui:Repeater>

Hello Everybody,

I create textareas and radiobuttons dynamically (It's ok).
When I submit the form I get the next error message:
(and object array is null)

NetUI Warning: Unable to update expression
"{actionForm.answers[0].text}".  The typical cause is that the object
represented by the expression is not available or is the wrong type for
updating.  Cause: com.bea.wlw.netui.script.ExpressionUpdateException: Exception
when attempting to update the expression
"{actionForm.answers[0].text}" with available binding contexts
[actionForm, pageFlow, globalApp]. Root cause:
knex.scripting.javascript.EvaluatorException: The undefined value has no
properties.

Does anyone have any clue about this behaviour?

Here is my source:

//JPF:
public class Answers implements Serializable
{ 
    private Integer answerID;
    private String text;
    private Boolean rightAnswer;

    public Answers(Integer answID, String answ, Boolean ra) throws Exception
    {
        this.answerID = answID;
        this.text = answ;
        this.rightAnswer = ra;
    }
    
    public Integer getAnswerID() { return this.answerID; }
    public String getText() { return this.text; }
    public void setText(String t) { this.text = t; }
    public Boolean isRightAnswer() { return this.rightAnswer; }
} 

public static class ModifyForm extends FormData
{
    private Integer rightAnswer;
    private Answers[] answers;
        
    public Answers[] getAnswers() { return this.answers; }        
    public void setAnswers(Answers[] ans) { this.answers = ans; }
    public void setRightAnswer(Integer rightAnswer) { this.rightAnswer =
rightAnswer; }
    public Integer getRightAnswer() { return this.rightAnswer; }
}

/**
 * @jpf:action
 * @jpf:forward name="success" path="index.jsp"
 */
protected Forward goModify()
{
    modifyForm = new ModifyForm();

    Answers[] answers = new Answers[rs.length];  //rs : result of query from
database
    for (int i = 0; i < rs.length; i++)
    {
        answers[i] = new Answers(rs[i].getAnswerID(), rs[i].getText(),
rs[i].isRightAnswer());
    }
    modifyForm.setAnswers(answers);
    modifyForm.setRightAnswer(new Integer(0));

    return new Forward("success", modifyForm);
}

//JSP:
<netui:form action="modifyQuestion">
    ...
    <netui-data:repeater dataSource="{actionForm.answers}">
        <netui-data:repeaterHeader>
            <table>
                <tr>
                    <td align="center"
valign="middle"><i18n:getMessage
messageName="rightAnswer"/></td>
                    <td align="center"
valign="middle"><i18n:getMessage
messageName="text"/></td>
                </tr>
        </netui-data:repeaterHeader>
        <netui-data:repeaterItem>
                <tr>
                    <td width="5%" align="center"
valign="middle">
                        <netui:radioButtonGroup
dataSource="{actionForm.rightAnswer}">
                            <netui:radioButtonOption
value="{container.item.answerID}">&nbsp;</netui:radioButtonO
ption>
                        </netui:radioButtonGroup>    
                    </td>
                    <td width="100%" align="center">
                        <netui:textArea
dataSource="{container.item.text}"
defaultValue="{container.item.text}" cols="40"
rows="4"/>
                    </td>
                </tr>
        </netui-data:repeaterItem>
        <netui-data:repeaterFooter>
            </table>
        </netui-data:repeaterFooter>    
    </netui-data:repeater>                                
    ...
    <netui:button type="submit"><i18n:getMessage
messageName="save"/></netui:button>