I have a QML `Loader` which loads another qml

```
Loader { id: gaugeLoader }

PieMenu {
    id: pieMenu

    MenuItem {
        text: "Add Bar Gauge"
        onTriggered: gaugeLoader.source = "qrc:/Gauges/horizontalBarGauge.qml"
    }
    MenuItem {
        text: "Action 2"
        onTriggered: print("Action 2")
    }
    MenuItem {
        text: "Action 3"
        onTriggered: print("Action 3")
    }
}

```

How can I pass parameters to set the `ID`, `width`, `height` and so on of the loaded qml?