SetLanguage can use a variable

Assets/Fungus/Narrative/Scripts/Commands/SetLanguage.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using UnityEngine.Serialization;
 using System.Collections;
 
 namespace Fungus
@@ -7,10 +8,14 @@ namespace Fungus
 	             "Set Language", 
 	             "Set the active language for the scene. A Localization object with a localization file must be present in the scene.")]
 	[AddComponentMenu("")]
-	public class SetLanguage : Command 
+	public class SetLanguage : Command, ISerializationCallbackReceiver
 	{
+		#region Obsolete Properties
+		[HideInInspector] [FormerlySerializedAs("languageCode")] public string languageCodeOLD;
+		#endregion
+
 		[Tooltip("Code of the language to set. e.g. ES, DE, JA")]
-		public string languageCode; 
+		public StringData _languageCode = new StringData(); 
 
 		public static string mostRecentLanguage = "";
 
@@ -19,11 +24,11 @@ namespace Fungus
 			Localization localization = GameObject.FindObjectOfType<Localization>();
 			if (localization != null)
 			{
-				localization.SetActiveLanguage(languageCode, true);
+				localization.SetActiveLanguage(_languageCode.Value, true);
 
 				// Cache the most recently set language code so we can continue to 
 				// use the same language in subsequent scenes.
-				mostRecentLanguage = languageCode;
+				mostRecentLanguage = _languageCode.Value;
 			}
 
 			Continue();
@@ -31,12 +36,28 @@ namespace Fungus
 
 		public override string GetSummary()
 		{
-			return languageCode;
+			return _languageCode.Value;
 		}
 
 		public override Color GetButtonColor()
 		{
 			return new Color32(184, 210, 235, 255);
 		}
+
+		//
+		// ISerializationCallbackReceiver implementation
+		//
+
+		public virtual void OnBeforeSerialize()
+		{}
+
+		public virtual void OnAfterDeserialize()
+		{
+			if (languageCodeOLD != default(string))
+			{
+				_languageCode.Value = languageCodeOLD;
+				languageCodeOLD = default(string);
+			}
+		}
 	}
 }

Assets/UpdatePropTest.unity

@@ -312,6 +312,7 @@ GameObject:
   - 114: {fileID: 979963256}
   - 114: {fileID: 979963257}
   - 114: {fileID: 979963258}
+  - 114: {fileID: 979963259}
   m_Layer: 0
   m_Name: Flowchart
   m_TagString: Untagged
@@ -345,7 +346,7 @@ MonoBehaviour:
     height: 859
   selectedBlock: {fileID: 979963241}
   selectedCommands:
-  - {fileID: 979963258}
+  - {fileID: 979963259}
   variables:
   - {fileID: 979963244}
   - {fileID: 979963252}
@@ -418,6 +419,7 @@ MonoBehaviour:
   - {fileID: 979963256}
   - {fileID: 979963257}
   - {fileID: 979963258}
+  - {fileID: 979963259}
 --- !u!114 &979963242
 MonoBehaviour:
   m_ObjectHideFlags: 2
@@ -741,8 +743,29 @@ MonoBehaviour:
   itemId: 14
   errorMessage: 
   indentLevel: 0
-  duration: 6
+  durationOLD: 0
+  _duration:
+    floatRef: {fileID: 0}
+    floatVal: 6
   targetBlock: {fileID: 979963241}
+--- !u!114 &979963259
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 979963238}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 3fc625e237d6048bf86f34835d8266d9, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  itemId: 15
+  errorMessage: 
+  indentLevel: 0
+  languageCodeOLD: 
+  _languageCode:
+    stringRef: {fileID: 0}
+    stringVal: ES
 --- !u!1 &1197120973
 GameObject:
   m_ObjectHideFlags: 0