Promoted Widget within a Promoted Widget programmatically

[ByForeward]

Hi

Widget Promotion

Based on several forums I managed to promote a graphicsView accordingly.
The issue comes when within the promoted class I need to create a QLabel (within the graphicsView) that itself needs to be promoted.

1. Promote Graphics View (through the designer)
2. Add QLabel Widget within graphicsView (programatically)

label= new QLabel();
  label->setFixedSize(320, 320);
  label->setText("Test Label");
  proxy = myScene->addWidget(label);
  proxy->setZValue(0);

label= new QLabel();
  label->setFixedSize(320, 320);
  label->setText("Test Label");
  proxy = myScene->addWidget(label);
  proxy->setZValue(0);

To copy to clipboard, switch view to plain text mode 

3. try to promote the generated label (That is within the graphicsView) to another class in code
Since i only have access to the label in the code and not via the designer.

How do I promote a QLabel to a specified class within code? (Not through the designer)

Your assistance is appreciated

Regards