Accessing QMap items in QML

[SteMMo]

Hi all,
I have a number of settings stored by a QMap( name, value).

class MachineSettings : public QAbstractListModel
{
   Q_OBJECT

public:
   MachineSettings();

   void insert(QString &key, QString &value);
   Q_INVOKABLE QString get(QString key){ return _settings[key]; };

  int rowCount(const QModelIndex & parent) const
  {
    Q_UNUSED(parent);
    qDebug() << "[rowCount] return: " << _settings.count();
    return _settings.count();
  };

   QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const
   {
    qDebug() << "[data] " << index.row() << " - " << role;
    return QVariant("**");
   };

private:
   QMap<QString, QString> _settings;
};

I passed the variable to QML and used as a ListView model.
How can I access to the QMap's items?

    ListView {
        id: listView
        anchors.left: parent.left
       ...
        interactive: false
        model: mysettings
        delegate: Item {
            x: 5
            width: 120
            height: 40
            Row {
                id: row1
                Rectangle {
                    width: 40
                    height: 40
                    color: "#ffaaaa"
                }

                Text {
                    text: "Key"
                    anchors.verticalCenter: parent.verticalCenter
                    font.bold: true
                }
                Text {
                    text: "Val "+model.email
                    anchors.verticalCenter: parent.verticalCenter
                    font.bold: true
                }
                spacing: 10
            }
        }
    }

It generates a list of some rows (how to handle the scroll bar??) containing text 'Key Val undefined'.
The debug output in the rowCount() returns '79' but the qDebugs in data() function does not appair in the console (?).

Thanks