Fix bug where scrolling WaypointZZ values in trigger event and action parameter text boxes did not work properly

Author: Rampastring

src/TSMapEditor/UI/Windows/TriggersWindow.cs

@@ -512,12 +512,12 @@ private void HandleScrollOnEventOrActionParameterTextBox(string currentParameter
                     int waypointIdentifier = Helpers.GetWaypointNumberFromAlphabeticalString(currentParameterValue);
                     if (Cursor.ScrollWheelValue < 0 && map.Waypoints.Exists(wp => wp.Identifier == waypointIdentifier + 1))
                     {
-                        textBox.Text = Helpers.WaypointNumberToAlphabeticalString(waypointIdentifier + 1);
+                        textBox.Text = (waypointIdentifier + 1).ToString(CultureInfo.InvariantCulture);
                         EditTrigger(editedTrigger);
                     }
                     else if (Cursor.ScrollWheelValue > 0 && map.Waypoints.Exists(wp => wp.Identifier == waypointIdentifier - 1))
                     {
-                        textBox.Text = Helpers.WaypointNumberToAlphabeticalString(waypointIdentifier - 1);
+                        textBox.Text = (waypointIdentifier - 1).ToString(CultureInfo.InvariantCulture);
                         EditTrigger(editedTrigger);
                     }
                     break;