How in a nested gridview expose a property of a function in qml

In the below example of code there is a GridView id:mainGrid nested in a ListView id:pageList which is the initialItem of the StackView id:stackView.There is a Function which defines the point posOfItemInGridView which is used as x,y point for StackView Transition. How can I get the itematindexPos value from GridView to StackView so the itematindexPos is not undefined.

import QtQml 2.15
import QtQuick.Window 2.2
import QtQml.Models 2.15
import org.kde.plasma.private.kicker 0.1 as Kicker

Kicker.DashboardWindow {
    id: allApps
    function enterDirectory(){
            let centerOfCell = Qt.point((Screen.width/8) * .45/2, (Screen.width/8) * .45/2)
            let posOfItemInGridView = Qt.point(itematindexPos.x - centerOfCell.x, itematindexPos.y - centerOfCell.y)
            return posOfItemInGridView
    }
    mainItem:
      StackView{
        id:stackView
        Transition {
            id: pushEnterTransition
            NumberAnimation {property: "x"; from: -((Screen.width/2)-enterDirectory().x); to: 0; duration: stackView.transitionDuration; easing.type: Easing.OutCubic}
            NumberAnimation {property: "y"; from: -((Screen.height/2)-enterDirectory().y); to: 0; duration: stackView.transitionDuration; easing.type: Easing.OutCubic}
        }
        Transition {
            id: popExitTransition
            NumberAnimation {property: "x"; from:0; to:-((Screen.width/2)-enterDirectory().x); duration: stackView.transitionDuration * 1.5; easing.type: Easing.OutCubic}
            NumberAnimation {property: "y"; from:0; to:-((Screen.height/2)-enterDirectory().y); duration: stackView.transitionDuration * 1.5; easing.type: Easing.OutCubic}
        }
        initialItem:
            MouseArea {
                id: mainItemRoot
                anchors.fill: parent
                hoverEnabled:true
                onClicked: {
                    allApps.toggle();
                }
            ListView{
                id:pageList
                anchors.fill:parent
                model: Math.ceil(appsModel.count / 35)
                delegate:
                    Item {
                        width:   7* mainGrid.cellWidth
                        height:  5* mainGrid.cellHeight
                        GridView {
                            id: mainGrid
                            cellWidth: Screen.width/8
                            cellHeight: Screen.height/6.1
                            anchors.fill: parent
                                MouseArea{
                                    id:areagridView
                                    anchors.fill:parent
                                    onClicked:(mouse)=> {
                                        let posInGridView = Qt.point(mouse.x, mouse.y)
                                        let posInContentItem = mapToItem(mainGrid.contentItem, posInGridView)
                                        let index = mainGrid.indexAt(posInContentItem.x, posInContentItem.y)
                                        let itematindex = mainGrid.itemAtIndex(index)
                                        let itematindexPos = Qt.point(itematindex.x, itematindex.y)
                                        console.log("itematindexPos:", itematindexPos)
                                        }
                                    }
                            model: visualModel
                                MyDelegateModel{
                                    id:visualModel
                                    delegate: MyDelegate {
                                        id: delegateRoot
                      }
                    }
                  }
                }
              }

            AppsModel{
                id:appsModel
             }
           }

    }
}

Thanks in advance.

itemAtIndexPos is just a local variable inside your onClicked signal handler. It does not exist outside of that handler. If you need to access it elsewhere, you need to create a property outside the handler and assign your value to that property. You probably should give a look at this doc to understand QML scope rules.

Kicker.DashboardWindow {

    // Create a property that exists outside of the functions
    property point itematindexPos

    function enterDirectory(){
            ...

            // The property is accessible inside functions that are in scope
            let posOfItemInGridView = Qt.point(allApps.itematindexPos.x - centerOfCell.x, allApps.itematindexPos.y - centerOfCell.y)
            return posOfItemInGridView
    }

...


    MouseArea{
        anchors.fill:parent
        onClicked:(mouse)=> {
            ...

            // Assign the property some value
            allApps.itematindexPos = Qt.point(itematindex.x, itematindex.y)
        }
    }
}