import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.layout.*;
import javafx.scene.control.*;

Stage {
   scene: Scene {
      width: 300 height: 200
      content: VBox {
         var clicks: Integer;

         spacing: 10
         content: [
            Label {
               def varText = bind if (clicks == 0) then "no clicks yet" else "{clicks} clicks"
               text : bind "There have been {varText}"
            }
            Button {
               text: "click me"
               onMouseClicked: function(e) { clicks++; }
            }
         ]
      }
   }
}