I'm trying to access a bean class that resides in a helper class

In that helper class I have a getter method to access that Bean.
What I'm doing is that storing the helper class itself in a session

as this does:

class ControllerHelper extends BaseHelper {

protected RequestData data = new RequestData();

public Object getDataBean() {
return dataBean;
}

public void chProcessRequest() throws ServletException, IOException {

request.getSession().setAttribute("helper", this);
...
}

}


And in my Jsp files I try to access the bean using EL statement,
like this:
${helper.dataBean.hobby}

but when I try to run the program , I receive his error message:

javax.el.PropertyNotFoundException: The class
'ch3.reorganised.ControllerHelper' does not have a readable property
'dataBean'

more explanation is that I'm using goldfish servlet engine.