I'm created an QAbstractListModel derived class from a CPP INVOKABLE method. Here the declaration :

class CustomModelList : public QAbstractListModel
{
    Q_OBJECT
    Q_PROPERTY(QString title READ title NOTIFY titleChanged)
     . . .
}
Q_DECLARE_METATYPE(CustomModelList  *)

On the CPP side, I have a CPP mediator set as context in the QQmlApplicationEngine. It is exposing a method to create two list at time :

Q_INVOKABLE bool createListModel(CustomModelList* pList1, CustomModelList* pList2)
{
    pList1 = new CustomModelList ("List #1", this);
    pList1 = new CustomModelList ("List #2", this);
}

And on the QML side, here is how I call it

var t1, t2;
manager.createListModel(t1, t2);

// t1 and t2 are always undefined after calling this function !

I tried using QObject* instead of CustomModelList* as parameter but I got the same negative result. I tried also QVariant* but always the same "undefined" result.

Obviously, it works doing this :

Q_INVOKABLE QObject* createListModel()
{
    return new CustomModelList ("List #1", this);
}
// Qml side
var t1 = manager.createListModel();

But this is not what I need.
Is there a way to create object on CPP using parameters of a method and then getting it on QML side ?

Best regards,