engine.rootContext()->setContextProperty change Instance

[neeme]

class Cust { };

Cust *c1 = new Cust();
Cust *c2 = new Cust();
Cust *c3 = new Cust();

engine.rootContext()->setContextProperty("cust",  c1);

I have a Cust.qml file.
How can i make cust -> c2 or cust -> c3 in Cust.qml ?

Thank you!

[Bob64]

@neeme You need a new class that presents the same interface as Cust but which is implemented by delegating to the active instance of Cust. In addition, you need a means of selecting the active instance. It is not clear whether you want to control this from QML. If so, then simply add a suitable method to your new class.