How to change the data in QAbstractlistModel?

QTLeearn

hi, I am new to Qt/QML, this is maybe a basic function. I want to use QAbstractlistModel to provide 2 roles of data to QML's listview model.

QHash<int, QByteArray> myModel::roleNames() const
{
    QHash<int, QByteArray> roles;
    roles[TimerRole] = "time";
    roles[TitleRole] = "title";
    return roles;
}

and in QML I have the following:

model: myModel
delegate:
//sth
time: model.time // editable

I also have a Q_PROPERTY in another class:

Q_PROPERTY(QDateTime currentTime READ currentTime WRITE setCurrentTime NOTIFY currentTimeChanged)

All I want to do is to change the model.time in qml with QDateTime currentTime, should I use QAbstractlistModel::setData( )? If yes, when to call setData and which aeguments should be passed into it?

Thank you in advance