qml listview ListView.view accessed from highlight is null

[Crawl.W]

ListView
{
        width: 274
        height: count > 0 ? 0 : contentHeight
        spacing: 2
        highlightFollowsCurrentItem: true

        model: assignTargetModel
        //delegate: lvDelegate
        highlight: lvHighlight
    
        Component
        {
             id: lvHighlight
             Item
             {
                  id: item
                   width: 274
                  height: 56
                   Image
                   {
                       source: (item.index === /*item.*/ListView.view.count - 1) ? "qrc:/Analysis/assets/target5_bg2_3615_778.png" : "qrc:/Analysis/assets/a_b_bg1_3615_757.png"
                   }
              }
}

Right in delegate, I guess highlight is created dynamically and the highlight is undefined by default. And so the ListView.view has not been attached to delegate.
If so, this is a terrible way that can cause unintentional errors.