How to save current index of ComboBox for supported map types

[edip]

I try to save index of ComboBox for choosing supported map types of Open Street Map. When opening the app again, the last chosen map index should be displayed. Qt.labs.settings didn't work as the example below:

import QtQuick 2.6
import QtQuick.Controls 2.0
import QtLocation 5.12
import QtPositioning 5.12
import Qt.labs.settings 1.0

ApplicationWindow{
    id: root
    width: 500
    height: 500
    visible: true
    Settings{
            id:mycombo
            property alias maptype: selectmap.currentIndex
        }
    Flickable {
        height: parent.height
        width: parent.width
        clip: true
        contentHeight: Math.max(mapColumn.implicitHeight, height)
        Column{
            anchors.horizontalCenter: parent.horizontalCenter
            id:mapColumn
            spacing: 5
            anchors.fill : parent
            Row{
                anchors.horizontalCenter: parent.horizontalCenter
                spacing:25
                Rectangle{
                	width:mapColumn.width
                	height:mapColumn.height-80
                	Map {
                          id:map
                    	    anchors.fill: parent
                    	    plugin: Plugin {
                              name: "osm"
                          }
                      }
               }
          }

          Column{
              id: combos
              spacing: 10
              width: parent.width
              anchors.verticalCenter: root.verticalCenter
                  Row{
                      anchors.horizontalCenter: parent.horizontalCenter
                      spacing:1
                      Label{ text:"Map Type: "; height: selectmap.height; verticalAlignment: Text.AlignVCenter; }
                      // Map Types
                      ComboBox {
                          id: selectmap
                          width: 200
                          model:map.supportedMapTypes
                          textRole:"description"
                          onCurrentIndexChanged: map.activeMapType = map.supportedMapTypes[currentIndex]

                      }
                  }
          }
      }
    }
}

Is it possible to save the current index of ComboBox for maps?

[ODБOï]

@edip hi,
After some manipulations i figured out that Settings works correctly but currentIndex of the combobox is resetted after the model change.

So do like this

    Settings{
        id:mycomboSettings
        property int maptype
    }
...
      ComboBox {

                         onModelChanged: currentIndex = mycomboSettings.maptype
                        Component.onDestruction: mycomboSettings.maptype = currentIndex

                    }

just make sure you provide application name, organization and domain. See here

[edip]

Thank you @LeLev I found a solution before but your solution is much better.