How to access child properties from another child in QML

I want to change image(child of Rectangle) on mouse hover of MouseArea(child of Rectangle)
here is my code:

Code:

---

Rectangle
{
    width: 600; height: 400
    Row
    {
        id: myRow; spacing: 5; x: 50; y: 200
        Repeater
        {
            id: myRepeater; model: 10
            Rectangle
            {
                width: 100; height: 100;
                property int myIndex: index
                Image
                {
                    source: "../GrayPoint.png"
                }
                MouseArea
                {
                    id: mouseArea; anchors.fill: parent; hoverEnabled: true
                    onEntered:
                        updateUI( parent )
                }
            }
 
        }
    }
	function updateUI( theParent )
    {
        theParent.childAt( 0, 0 ).source = "../RedPoint.png"
    }
}

---

Add a property to the parent and use it in both children.

Cheers,
_

Or refer to the item using its id:

Code:

---

Image {
  source: ma.containsMouse ? "../RedPoint.png" : "../GrayPoint.png"
}
MouseArea {
  id: ma
  hoverEnabled: true
  anchors.fill: parent
}

---