POD cannot used in QML

class Infomation
{
    Q_GADGET

    Q_PROPERTY(QString name READ name WRITE setName)
    Q_PROPERTY(QDate date READ date WRITE setDate)
public:
    Infomation() : m_name(), m_date() {}
    explicit Infomation(QString name, QDate date) : m_name(name), m_date(date) {}
    QString name() const { return m_name; }
    void setName(QString name) { if (name != m_name) { m_name = name; } }
    QDate date() const { return m_date; }
    void setDate(QDate date) { if (date != m_date) { m_date = date; } }
private:
    QString m_name;
    QDate m_date;
};