diff --git a/java/org/artisanlogiciel/games/maze/LabyLayers.java b/java/org/artisanlogiciel/games/maze/LabyLayers.java
index 6c3178c..8174990 100644
--- a/java/org/artisanlogiciel/games/maze/LabyLayers.java
+++ b/java/org/artisanlogiciel/games/maze/LabyLayers.java
@@ -15,6 +15,7 @@ extends Range
     }
     public void addLabyModel(int z, LabyModel model)
     {
+        updateBounds(z);
         layers.put(new Integer(z), model);
     }
 
diff --git a/java/org/artisanlogiciel/games/maze/gui/Display.java b/java/org/artisanlogiciel/games/maze/gui/Display.java
index 9474d84..e8b6fcd 100644
--- a/java/org/artisanlogiciel/games/maze/gui/Display.java
+++ b/java/org/artisanlogiciel/games/maze/gui/Display.java
@@ -799,7 +799,19 @@ implements StatusListener
                     FileInputStream inputStream = null;
                     try {
                         inputStream = new FileInputStream(infile);
-                        setModel(new MazePersistWorldEdit().parseInputStream("we",inputStream));
+                        LabyLayers newLayers = new MazePersistWorldEdit().parseInputStream("we",inputStream);
+                        if ( ! newLayers.isEmpty()) {
+                            int l = layer;
+                            for (int i = newLayers.getMin(); i <= newLayers.getMax(); i++) {
+                                LabyModel m = newLayers.getLayer(i);
+                                if (m != null) {
+                                    System.out.println("add layer " + l);
+                                    layers.addLabyModel(l, m);
+                                    l++;
+                                }
+                            }
+                            setModel(layers.getLayer(layer));
+                        }
                     } catch (IOException io) {
                         io.printStackTrace(System.err);
                         statusField.setText("[ERROR] Can't load " + infile.getAbsolutePath());
diff --git a/java/org/artisanlogiciel/games/maze/persist/MazePersistWorldEdit.java b/java/org/artisanlogiciel/games/maze/persist/MazePersistWorldEdit.java
index 0cb58c1..fe8e47a 100644
--- a/java/org/artisanlogiciel/games/maze/persist/MazePersistWorldEdit.java
+++ b/java/org/artisanlogiciel/games/maze/persist/MazePersistWorldEdit.java
@@ -1,6 +1,7 @@
 package org.artisanlogiciel.games.maze.persist;
 
 import org.artisanlogiciel.games.maze.Brick;
+import org.artisanlogiciel.games.maze.LabyLayers;
 import org.artisanlogiciel.games.maze.LabyModel;
 import org.artisanlogiciel.games.minetest.*;
 
@@ -109,7 +110,7 @@ public class MazePersistWorldEdit {
     }
 
 
-    public LabyModel parseInputStream(String pFormat, InputStream pIn) throws IOException {
+    public LabyLayers parseInputStream(String pFormat, InputStream pIn) throws IOException {
         // TODO using WorldEditGenerator
         if ((pFormat == null) || (pFormat.equals("we"))) {
             // DataInputStream in = new DataInputStream(pIn);
@@ -121,18 +122,21 @@ public class MazePersistWorldEdit {
             World world = reader.read();
             // need to convert world into a LabyModel ...
             // get level z = 0
-            Slice ground = world.getSlice(0);
-            if ( ground != null )
-            {
-                model = getModelFromSlice(ground);
-                model.setOnewaywall(true);
-                System.out.println(model);
+            LabyLayers layers = new LabyLayers();
+            if ( ! world.isEmpty()) {
+                for (int level = world.getMin(); level <= world.getMax(); level++) {
+                    Slice ground = world.getSlice(level);
+                    if (ground != null) {
+                        model = getModelFromSlice(ground);
+                        model.setOnewaywall(true);
+                        layers.addLabyModel(level, model);
+                        System.out.println(model);
+                    } else {
+                        System.err.println("no ground !");
+                    }
+                }
             }
-            else
-            {
-                System.err.println("no ground !");
-            }
-            return model;
+            return layers;
         } else {
             throw new IOException("Format " + pFormat + " Not yet implemented.");
         }
@@ -149,24 +153,26 @@ public class MazePersistWorldEdit {
             int up = rawRange.getMin();
 
             short [][] t = new short[width][height];
-            int left = ground.getMin();
-            for ( int x = ground.getMin() ; x < ground.getMax() ; x ++)
-            {
-                // work on raws ...
-                Raw raw = ground.getRaw(new Integer(x));
-                if ( raw != null )
-                {
-                    for ( int y = raw.getMin() ; y < raw.getMax(); y ++) {
-                        // full closed place ... ( lazzy ... )
-                        Node node = raw.getNode(y);
-                        short move = LabyModel.EMPTY | 32;
-                        if ( node != null ) {
-                            move = 0;
+            if ( ! ground.isEmpty() ) {
+                int left = ground.getMin();
+                for (int x = ground.getMin(); x <= ground.getMax(); x++) {
+                    // work on raws ...
+                    Raw raw = ground.getRaw(new Integer(x));
+                    if ( raw != null) {
+                        if (!raw.isEmpty()) {
+                            for (int y = raw.getMin(); y <= raw.getMax(); y++) {
+                                // full closed place ... ( lazzy ... )
+                                Node node = raw.getNode(y);
+                                short move = LabyModel.EMPTY | 32;
+                                if (node != null) {
+                                    move = 0;
+                                }
+                                int newx = x - left;
+                                int newy = y - up;
+                                System.out.println(" " + newx + " " + newy + " =" + move);
+                                t[newx][newy] = move;
+                            }
                         }
-                        int newx = x - left;
-                        int newy = y - up;
-                        System.out.println( " " + newx + " " + newy  + " =" + move );
-                        t[newx][newy] = move;
                     }
                 }
             }
diff --git a/java/org/artisanlogiciel/games/minetest/Range.java b/java/org/artisanlogiciel/games/minetest/Range.java
index e29006a..8370ea7 100644
--- a/java/org/artisanlogiciel/games/minetest/Range.java
+++ b/java/org/artisanlogiciel/games/minetest/Range.java
@@ -33,7 +33,7 @@ public class Range {
         return update;
     }
 
-    boolean updateBounds(int v)
+    protected boolean updateBounds(int v)
     {
         boolean update = false;
 
@@ -65,7 +65,7 @@ public class Range {
         }
         else
         {
-            return max - min;
+            return max - min + 1;
         }
     }
 }
diff --git a/java/org/artisanlogiciel/lua/CharProvider.java b/java/org/artisanlogiciel/lua/CharProvider.java
index 98bdc6f..6d79ca8 100644
--- a/java/org/artisanlogiciel/lua/CharProvider.java
+++ b/java/org/artisanlogiciel/lua/CharProvider.java
@@ -4,6 +4,7 @@ public class CharProvider {
 
     String input;
     int current;
+    int last;
 
     public CharProvider(String input) {
         this.input = input;
@@ -13,9 +14,16 @@ public class CharProvider {
     public char getNextchar()
     {
         int i = current;
-        if ( input.length() > current) {
-            current++;
-            return input.charAt(i);
+        int max = input.length();
+        if ( max > current) {
+            char c = 0;
+            last = current;
+            while ( ( max > i ) && ( c = input.charAt(i) ) == ' ' )
+            {
+                i++;
+            }
+            current = i + 1;
+            return c;
         }
         else
         {
@@ -26,7 +34,7 @@ public class CharProvider {
     public void pushBackChar(char c)
     {
         System.out.print('*');
-        current--;
+        current = last;
     }
 
 }