diff --git a/src/hollywoo/Director.hx b/src/hollywoo/Director.hx
index bff15bf..bc930f2 100644
--- a/src/hollywoo/Director.hx
+++ b/src/hollywoo/Director.hx
@@ -31,7 +31,7 @@ typedef AutoZConfig = {
 
 interface Director<Set:Cloneable<Set>, ScreenPosition, Actor, Sound, Song, Prop, VoiceTrack> {
     var movie(default, default):Movie<Set, ScreenPosition, Actor, Sound, Song, Prop, VoiceTrack>;
-    var autoZConfig(default,null):Option<AutoZConfig>;
+    function autoZConfig():Option<AutoZConfig>;
     function showSet(set:Set, time:SceneTime, perspective:ScenePerspective, appearance:Appearance, cc:Continuation):Void;
     function hideSet(set:Set, cc:Continuation):Void;
     function showCharacter(character:Character<Actor>, appearance:Appearance, cc:Continuation):Void;
diff --git a/src/hollywoo/Movie.hx b/src/hollywoo/Movie.hx
index 3a0871e..a0b5683 100644
--- a/src/hollywoo/Movie.hx
+++ b/src/hollywoo/Movie.hx
@@ -10,6 +10,7 @@ import hollywoo.Scene;
 import hollywoo.Director;
 import haxe.Json;
 import uuid.Uuid;
+import haxe.ds.Option;
 
 using kiss.FuzzyMapTools;
 
diff --git a/src/hollywoo/Movie.kiss b/src/hollywoo/Movie.kiss
index 7f3a1b2..a32a0f4 100644
--- a/src/hollywoo/Movie.kiss
+++ b/src/hollywoo/Movie.kiss
@@ -280,7 +280,7 @@
 
 (hollywooMethod autoZProcess false [:StagePosition position :Continuation cc]
     // handle auto z recursively
-    (ifLet [(Some (objectWith zPerLayer frontLayer)) director.autoZConfig]
+    (ifLet [(Some (objectWith zPerLayer frontLayer)) (director.autoZConfig)]
             {
                 (doFor =>name otherCharacter .characters (_currentScene)
                     (when (and (= position.x otherCharacter.stagePosition.x) (= position.y otherCharacter.stagePosition.y) (= position.z otherCharacter.stagePosition.z))