func renameSubjectID(){
        if(exportCount > 0){
            let okAlert = UIAlertController(title: "Cannot rename", message: "Subject ID cannot be rename after data was exported once", preferredStyle: .alert)
            let action2 = UIAlertAction(title: "Close", style: .default) { _ in
            }

            okAlert.addAction(action2)

            self.present(okAlert, animated: true)

            return
        }

        renamed = true
        nameView.subviews.forEach{ $0.removeFromSuperview() }
        nameView.removeFromSuperview()

        enterNameDialog()

    }