How to Pass values from C++ to QML in a QT widget application

[Jaswenth S]

I am beginner to Qt , I am facing issue on transmitting value from C++ to QML,
I am able to get the value from QT UI but I can't able to emit that ,
And in QML i am getting error called
ReferenceError: <class given in setContextProperty > is not defined
I was stuck here , help me in this

[mrdebug]

.h
signals:
    void attendanceSet(QString Stirng01);

.cpp
        this->rootContext()->setContextProperty("MyClass", this);
        this->load(QUrl(QStringLiteral("qrc:///Qml/main.qml")));

.ccp (in a timer)
emit attendanceSet("Hello");

.qml
    Connections {
        target: MyClass
        onAttendanceSet: attendanceSet(Stirng01);
    }

    function attendanceSet(Stirng01) {
        console.log(Stirng01)
    }