Reset custom property value.

[Ekta]

Hello,
I have a Button & Text. The Button has a toggle property when we click on it, acts like a toggle & displays the whole text message and off displays just one line with ...
My question is, is there any way to reset this value to controller.toggle if needed?
Switching back and forth to this qml component just takes the last value of toggle instead of resetting it to controller's value.

Initially, I tried to set checkable to be true and used checked: controller.toggle and it worked but problem is screen reader reads it as checkbox instead of a button

  Text {
        id: textbox

        maximumLineCount: toggleBtn.toggle ? 2 : 1
        elide: Text.ElideRight
        wrapMode: Text.WordWrap
        textFormat: Text.StyledText
        text: controller.messageText
}
Button {
        id: toggleBtn
       property bool toggle: controller.toggle

        height: 24
        width: 24
        focus: visible
        visible: textBox.truncated || toggle
       iconName: toggle ? "arrow-up" : "arrow-down"
        onClicked: {
            toggle = !toggle;
            controller.onExpand(toggle);
        }
}

[NYBL]

Why you do toggle = !toggle; and not controller.toggle = !toggle;
also why you call controller.onExpand(toggle); in qml and not in the toggle setter?