I figured out a way to update the TextBlock in ListView! I’ll explain it by using your example.
If you set your text in the Event Construct of ServerListItemWidget, it will work. In fact, if you create a custom event in ServerListItemWidget to set the text and call it from within the widget at any point of time, it will work. If you’ll try to call this custom event in some other widget, it’ll fail to update the list.