How to get and set a session variable from backing bean?

Hi im using Jdev 11.1.1.2.0 and i need to set and get a session variable from backing Bean.
Any idea?

the class :
package arq.resources;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;
public class SesionSigef {
public FacesContext context;
public HttpSession session;
public SesionSigef() {
super();
context = FacesContext.getCurrentInstance();
session = (HttpSession)(context.getExternalContext().getSession(true));
public Object getVariableSesion(String atributo){
return session.getAttribute(atributo);
public void setVariableSesion(String atributo,Object valor){
session.setAttribute(atributo, valor);
the example of use :
SesionSigef se = new SesionSigef();
DatosRec da = new DatosRec();
da.setDocumentoCip("Aprobar");
se.setVariableSesion("DatosRec", da);
thanks
Joaquin

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