ShowSprite can use a variable

Assets/Fungus/Sprite/Scripts/Commands/ShowSprite.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using UnityEngine.Serialization;
 using System;
 using System.Collections;
 
@@ -8,13 +9,17 @@ namespace Fungus
 	             "Show Sprite", 
 	             "Makes a sprite visible / invisible by setting the color alpha.")]
 	[AddComponentMenu("")]
-	public class ShowSprite : Command 
+	public class ShowSprite : Command, ISerializationCallbackReceiver 
 	{
+		#region Obsolete Properties
+		[HideInInspector] [FormerlySerializedAs("visible")] public bool visibleOLD;
+		#endregion
+
 		[Tooltip("Sprite object to be made visible / invisible")]
 		public SpriteRenderer spriteRenderer;
 
 		[Tooltip("Make the sprite visible or invisible")]
-		public bool visible = true;
+		public BooleanData _visible = new BooleanData(false);
 
 		[Tooltip("Affect the visibility of child sprites")]
 		public bool affectChildren = true;
@@ -28,12 +33,12 @@ namespace Fungus
 					SpriteRenderer[] children = spriteRenderer.gameObject.GetComponentsInChildren<SpriteRenderer>();
 					foreach (SpriteRenderer sr in children)
 					{
-						SetSpriteAlpha(sr, visible);
+						SetSpriteAlpha(sr, _visible.Value);
 					}
 				}
 				else
 				{
-					SetSpriteAlpha(spriteRenderer, visible);
+					SetSpriteAlpha(spriteRenderer, _visible.Value);
 				}
 			}
 
@@ -54,13 +59,30 @@ namespace Fungus
 				return "Error: No sprite renderer selected";
 			}
 
-			return spriteRenderer.name + " to " + (visible ? "visible" : "invisible");
+			return spriteRenderer.name + " to " + (_visible.Value ? "visible" : "invisible");
 		}
 
 		public override Color GetButtonColor()
 		{
 			return new Color32(221, 184, 169, 255);
 		}
+
+
+		//
+		// ISerializationCallbackReceiver implementation
+		//
+
+		public virtual void OnBeforeSerialize()
+		{}
+
+		public virtual void OnAfterDeserialize()
+		{
+			if (visibleOLD != default(bool))
+			{
+				_visible.Value = visibleOLD;
+				visibleOLD = default(bool);
+			}
+		}
 	}
 
 }

Assets/UpdatePropTest.unity

@@ -313,6 +313,8 @@ GameObject:
   - 114: {fileID: 979963257}
   - 114: {fileID: 979963258}
   - 114: {fileID: 979963259}
+  - 114: {fileID: 979963261}
+  - 114: {fileID: 979963260}
   m_Layer: 0
   m_Name: Flowchart
   m_TagString: Untagged
@@ -346,7 +348,7 @@ MonoBehaviour:
     height: 859
   selectedBlock: {fileID: 979963241}
   selectedCommands:
-  - {fileID: 979963259}
+  - {fileID: 979963260}
   variables:
   - {fileID: 979963244}
   - {fileID: 979963252}
@@ -420,6 +422,8 @@ MonoBehaviour:
   - {fileID: 979963257}
   - {fileID: 979963258}
   - {fileID: 979963259}
+  - {fileID: 979963261}
+  - {fileID: 979963260}
 --- !u!114 &979963242
 MonoBehaviour:
   m_ObjectHideFlags: 2
@@ -765,7 +769,48 @@ MonoBehaviour:
   languageCodeOLD: 
   _languageCode:
     stringRef: {fileID: 0}
-    stringVal: ES
+    stringVal: 
+--- !u!114 &979963260
+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: 10cd462c89cb047158ccfb8a8df3f60a, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  itemId: 17
+  errorMessage: 
+  indentLevel: 0
+  spriteRenderer: {fileID: 0}
+  visible: 0
+  affectChildren: 1
+--- !u!114 &979963261
+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: accc065c3e9a6457496f075b1bd49adc, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  itemId: 16
+  errorMessage: 
+  indentLevel: 0
+  durationOLD: 0
+  targetColorOLD: {r: 0, g: 0, b: 0, a: 0}
+  spriteRenderer: {fileID: 0}
+  _duration:
+    floatRef: {fileID: 0}
+    floatVal: 5
+  _targetColor:
+    colorRef: {fileID: 0}
+    colorVal: {r: 0.7205882, g: 0.10067042, b: 0.10067042, a: 1}
+  waitUntilFinished: 1
 --- !u!1 &1197120973
 GameObject:
   m_ObjectHideFlags: 0