change offlineStoragePath qml

[filipdns]

Hello, I want to update the local data base by delete it and replace it by master database.

directly copy the master to local make it fail.

then I want to change offlineStoragePath :

first, I want to set the location of the local database with:

main.cpp

QQmlApplicationEngine engine;
engine.rootContext()->setContextProperty("engine", &engine);
engine.load(QUrl(QStringLiteral("qrc:/qml/main.qml")));

main.qml

Component.onCompleted:
    {engine.offlineStoragePath="E:/database"}

but it's not working

Could you help me?

thank you very much