name

exp_scenario/module/gui/calculator.lua

@@ -65,6 +65,7 @@ Elements.calculator_result_label = Gui.define("calculator/result_label")
     :draw{
         type = "label",
         caption = "",
+        name = "calculator_result_label",
         style = "heading_2_label",
     }
 
@@ -323,7 +324,7 @@ end
 
 --- Value change
 function Elements.change(event)
-    Elements.calculator_result_label.caption = event.text == "" and "" or Elements.parse(event.text:lower())
+    event.element.parent.calculator_result_label.caption = event.text == "" and "" or Elements.parse(event.text:lower())
 end
 
 local e = defines.events