Edit TableView Content from other QML File

[RudiVoeller]

Hello guys,

I want to add content to Tableview from an other QML File. I have no idea, how to do this.
Here are my two Files:

MarkerView File:

import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
import QtQuick.Window 2.2
import Qt.labs.qmlmodels 1.0


Window{
    width: 500
    height: 500
    title: "Markierungen"

    property var horizontal_header_data: ["ID", "Name", "Zeitpunkt"]
    property TableView markerTable : TableView{
        id: markerTable
        anchors.fill: parent
        boundsBehavior: Flickable.StopAtBounds
        topMargin: horizontalHeader.height
        clip: true // clip content to table dimensions
        columnSpacing: 1 // in case of big/row spacing, you need to take care of width/height providers (to get along with it)
        property var columnWidths: [50, 100, 100]

        columnWidthProvider: function(column){ return columnWidths[column] }
        Row {
            id: horizontalHeader
            y: markerTable.contentY
            z: 2
            Repeater {
                model: markerTable.columns
                Label {
                    width: markerTable.columnWidthProvider(modelData); height: 30
                    text: horizontal_header_data[index]
                    padding: 12
                    verticalAlignment: Text.AlignVCenter; horizontalAlignment: Text.AlignHCenter
                    color: "white"
                    background: Rectangle { color: "#b5b5b5" }
                }
            }
        }


        model: TableModel{
            TableModelColumn{ display: "ID"
                id: idColumn
            }
            TableModelColumn{ display: "Name"
                id: nameColumn
            }
            TableModelColumn{ display: "Zeitpunkt"
                id: zeitpunktColumn
            }
        }
        delegate: DelegateChooser{
            DelegateChoice{
                column: 0
                delegate: Label{
                    padding: 12
                    text: model.display
                }
            }
            DelegateChoice{
                column: 1
                delegate: TextField{
                    placeholderText: "Name"
                    selectByMouse: true
                    padding: 12
                    onAccepted: model.display = text

                }
            }
            DelegateChoice{
                column: 2
                delegate: Label{
                    text: model.display
                    padding: 12

                    MouseArea{
                        anchors.fill: parent
                        onPressed: {
                            //  slider.value = controller.stepForTime(model.display);
                            //  controller.setStep(slider.value);

                        }
                    }
                }
            }
        }


    }

}

Want to add content to the table, when i press on a MenuItem in an other File:

Menu{
            id: contextMenu
            MenuItem{

                text: "Marker Position"

                onTriggered:{

                   
                    markerTable.model.appendRow({ID: markerTable.model.rowCount+1 + "",Name:"", Zeitpunkt: "" + 
                    Qt.formatDateTime(controller.timeForStep(slider.value),timeFormat),})
                }
            }
        }