How to increase geoDataPlacemarker size in marbleWidget?

[NickJC]

Hello, I have been working for a while with marbleWidget. I have managed to include a set of markers with custom icons but I am unable to find a way to change the size of said icons in the map. I have tried using GeoDataIconStyle.setScale() and GeoDataPlacemark.setZoomLevel() with no results (no matter what arguments I give the size remains the same, unless I specify setScale(1) in which case the icon occupies the entire map screen).
Here is the snippet of my code that handles the placemark:

    Marble::GeoDataDocument* document = new Marble::GeoDataDocument();

    station = new Marble::GeoDataPlacemark();
    Marble::GeoDataStyle *stationst = new Marble::GeoDataStyle(*station->style());
    Marble::GeoDataIconStyle stationic = station->style()->iconStyle();

    stationic.setIconPath("/home/pi/RVT/station.png");
    stationic.setScale(1.5);
    stationst->setIconStyle(stationic);
    station->setName("Home");
    station->setCoordinate(-3.741667, 40.353439, 0.0, Marble::GeoDataCoordinates::Degree);
    station->setStyle(Marble::GeoDataStyle::Ptr(stationst));
    //station->setZoomLevel(18);
    station->setVisible(true);
    document->append(station);
    //document->setZoomLevel(0.1);

    mapWin->model()->treeModel()->addDocument(document);

I would appreciate a lot if someone could tell me how to change the size of my marker,
Thanks