Communicating a Qml file with a C++ file in Qt

[serkan_tr]

Hello, I'm making a project and I'm trying to communicate the QML side and the C++ side in my project.
In order not to create an object on the QML side I am using qmlRegisterUncreableType but not working i get error

// person.h
#ifndef PERSON_H
#define PERSON_H

#include <QObject>

class Person : public QObject
{
    Q_OBJECT

public:
    explicit Person(QObject *parent = nullptr);
    virtual ~Person();

    Q_PROPERTY(QString name READ name NOTIFY nameChanged)
    QString name() const;

    Q_PROPERTY(int age READ age NOTIFY ageChanged)
    int age() const;

signals:
    void nameChanged(const QString &name);
    void ageChanged(int age);

public slots:
    void setName(const QString &name);
    void setAge(int age);

private:
    QString m_name;
    int m_age;
};

#endif // PERSON_H

// person.cpp
#include "person.h"

Person::Person(QObject *parent)
    : QObject(parent)
{

}

Person::~Person()
{

}

QString Person::name() const
{
    return m_name;
}

int Person::age() const
{
    return m_age;
}

void Person::setName(const QString &name)
{
    if (m_name == name)
        return;

    m_name = name;
    emit nameChanged(m_name);
}

void Person::setAge(int age)
{
    if (m_age == age)
        return;

    m_age = age;
    emit ageChanged(m_age);
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>
#include "person.h"

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QGuiApplication app(argc, argv);
    qmlRegisterUncreatableType<Person>("People", 1, 0, "Person", "Can not create Person in QML");

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    return app.exec();
}

// main.qml
import QtQuick 2.0
import People  1.0

Rectangle {
    width: 200
    height: 200

    Text {
        text: Person.name
        anchors.centerIn: parent
    }
}

error: qrc:/main.qml:10:9: Unable to assign [undefined] to QString