Redirecting parent/top level from inner iframe through bean

Question

I would like to be able to redirect a top level/parent xhtml through a bean. I have tried the following within my bean class:

if (result == 1) {
  FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "You have successfully changed your password. Please log in to continue.", null));
  con.close();
  FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
  return "/index?faces-redirect=true";
}

also

if (result == 1) {
  FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "You have successfully changed your password. Please log in to continue.", null));
  con.close();
  FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
  FacesContext.getCurrentInstance().redirect("/index.xhtml");
  return;
}

Both of the above will redirect the iframes page but not the parent page. How would I achieve this?

The following are other pages I have referenced with no luck:

• JSF page redirecting from java bean
• https://stackoverflow.com/questions/19837614/how-to-redirect-jsf-page-from-iframe-to-parent-window
• https://stackoverflow.com/questions/22072739/redirecting-iframes-parent-page-using-ajax-and-jsf