diff --git a/resources/bug.yml b/resources/bug.yml
index aa9890f..7b9b3d6 100644
--- a/resources/bug.yml
+++ b/resources/bug.yml
@@ -73,10 +73,10 @@
 
   product:
     - sku         : BL394D
-      quantity    : 4
+      quantity    : 5
       description : Basketball
       price       : 450.00
     - sku         : BL394D
-      quantity    : 4
+      quantity    : 5
       description : Basketball
       price       : 450.00
diff --git a/resources/test.json b/resources/test.json
index eacfbf5..c8f1d8c 100644
--- a/resources/test.json
+++ b/resources/test.json
@@ -1,20 +1,20 @@
 {
     "glossary": {
         "title": "example glossary",
-		"GlossDiv": {
+        "GlossDiv": {
             "title": "S",
-			"GlossList": {
+            "GlossList": {
                 "GlossEntry": {
                     "ID": "SGML",
-					"SortAs": "SGML",
-					"GlossTerm": "Standard Generalized Markup Language",
-					"Acronym": "SGML",
-					"Abbrev": "ISO 8879:1986",
-					"GlossDef": {
+                    "SortAs": "SGML",
+                    "GlossTerm": "Standard Generalized Markup Language",
+                    "Acronym": "SGML",
+                    "Abbrev": "ISO 8879:1986",
+                    "GlossDef": {
                         "para": "A meta-markup language, used to create markup languages such as DocBook.",
-						"GlossSeeAlso": ["GML", "XML"]
+                        "GlossSeeAlso": ["GML", "XML"]
                     },
-					"GlossSee": "markup"
+                    "GlossSee": "markup"
                 }
             }
         }
diff --git a/samples/json-loader.vala b/samples/json-loader.vala
index f71e2f2..dcdfe10 100644
--- a/samples/json-loader.vala
+++ b/samples/json-loader.vala
@@ -40,7 +40,7 @@ int main (string[] args)
     var done     = false;
 
     of.title ("Pluie Yaml Library", Pluie.Yaml.VERSION, "a-sansara");
-    Pluie.Yaml.DEBUG = false;
+    Pluie.Yaml.DEBUG = true;
     var loader = new Yaml.Loader (path, true, true);
     if ((done = loader.done)) {
         var root = loader.get_nodes ();
diff --git a/samples/yaml-bug.vala b/samples/yaml-bug.vala
index 51d3275..b2ece8a 100644
--- a/samples/yaml-bug.vala
+++ b/samples/yaml-bug.vala
@@ -42,6 +42,7 @@ int main (string[] args)
 
     of.title ("Pluie Yaml Library", Pluie.Yaml.VERSION, "a-sansara");
     Pluie.Yaml.DEBUG = false;
+    Yaml.Loader.PACK_NESTED_ENTRIES = true;
     var loader = new Yaml.Loader (path, true, true);
     if ((done = loader.done)) {
         var root = loader.get_nodes ();
diff --git a/samples/yaml-tag.vala b/samples/yaml-tag.vala
index f3cfb35..533bf32 100644
--- a/samples/yaml-tag.vala
+++ b/samples/yaml-tag.vala
@@ -41,7 +41,7 @@ int main (string[] args)
     var done     = false;
 
     of.title ("Pluie Yaml Library", Pluie.Yaml.VERSION, "a-sansara");
-    Pluie.Yaml.DEBUG = true;
+    Pluie.Yaml.DEBUG = false;
     Yaml.Object? obj = null;
     var config = new Yaml.Config (path, true);
     var root   = config.root_node ();
diff --git a/samples/yaml-tonode.vala b/samples/yaml-tonode.vala
index 6359323..8144b50 100644
--- a/samples/yaml-tonode.vala
+++ b/samples/yaml-tonode.vala
@@ -106,6 +106,7 @@ int main (string[] args)
     Pluie.Yaml.DEBUG = false;
     var config = new Yaml.Config (path, true);
     var root   = config.root_node ();
+    root.display_childs ();
     root.first ().display_childs ();
 
     of.action ("Yaml.Builder.from_node", root.first ().name);
diff --git a/src/vala/Pluie/Yaml.Node.vala b/src/vala/Pluie/Yaml.Node.vala
index 0d6d1c4..a3ffa4c 100644
--- a/src/vala/Pluie/Yaml.Node.vala
+++ b/src/vala/Pluie/Yaml.Node.vala
@@ -343,7 +343,7 @@ public class Pluie.Yaml.Node : Yaml.AbstractChild, Pluie.Yaml.Collection
                 )
                 : "",
             of.c (ECHO.OPTION).s ("]"),
-            withTag && this.ntype.is_root () ? (this as Yaml.Root).get_display_tag_directives () : ""
+            withTag && this.ntype.is_root () && (this as Yaml.Root) !=null ? (this as Yaml.Root).get_display_tag_directives () : ""
         );
     }
 }
diff --git a/src/vala/Pluie/Yaml.Processor.vala b/src/vala/Pluie/Yaml.Processor.vala
index d73b401..6567a2b 100644
--- a/src/vala/Pluie/Yaml.Processor.vala
+++ b/src/vala/Pluie/Yaml.Processor.vala
@@ -198,30 +198,36 @@ public class Pluie.Yaml.Processor
                 break;
             }
             if (!this.begin) {
-                if (this.event.evtype.is_document_start ()) {
+                if (this.event.evtype.is_sequence_start () || this.event.evtype.is_mapping_start ()) {
+                    this.begin = true;
+                    continue;
+                }
+                else if (this.event.evtype.is_document_start ()) {
                     this.begin = true;
                     // to do
-                    this.next_event ();
+                    this.event = this.next_event ();
+                    if (this.event.evtype.is_tag ()) {
+                        this.root.tag = new Yaml.Tag (this.event.data["suffix"], this.event.data["handle"].replace("!", ""));
+                        this.event = this.next_event ();
+                    }
                     continue;
                 }
             }
             else {
-                if (this.event.evtype.is_mapping_end () || this.event.evtype.is_sequence_end ()) {
+                if (this.event.evtype.is_anchor ()) {
+                    this.on_anchor ();
+                }
+                else if (this.event.evtype.is_alias ()) {
+                    this.on_alias ();
+                }
+                else if (this.event.evtype.is_mapping_end () || this.event.evtype.is_sequence_end ()) {
                     this.on_block_end ();
                     continue;
                 }
-                if (this.event.evtype.is_key () && (this.event = this.get_value_key_event ()) != null) {
+                else if (this.event.evtype.is_key () && (this.event = this.get_value_key_event ()) != null) {
                     this.on_key ();
                 }
-                if (this.event.evtype.is_anchor ()) {
-                    this.event = this.next_event ();
-                    this.on_anchor ();
-                }
-                if (this.event.evtype.is_alias ()) {
-                    this.event = this.next_event ();
-                    this.on_alias ();
-                }
-                else if (this.event.evtype.is_entry ()) {
+                else  if (this.event.evtype.is_entry ()) {
                     this.on_entry ();
                 }
                 else if (this.event.evtype.is_mapping_start ()) {
@@ -275,7 +281,7 @@ public class Pluie.Yaml.Processor
         Yaml.Event? evt = null;
         if (this.iterator.has_next () && this.iterator.next ()) {
             evt = this.iterator.get ();
-            Yaml.dbg ("    1>>>>> [EVENT event [%d] %s <<<<< %s".printf (this.indexEvt++, evt.evtype.infos (), Log.METHOD));
+            Yaml.dbg ("    >>>>> [EVENT event [%d] %s <<<<< %s".printf (this.indexEvt++, evt.evtype.infos (), Log.METHOD));
         }
         return evt;
     }
@@ -374,31 +380,13 @@ public class Pluie.Yaml.Processor
      */
     private void on_block_end ()
     {
-        Yaml.dbg (" ===== >> ON BLOCK END ===== ");
-        Yaml.dbg ("    - parent_node : %s (%s)".printf (this.parent_node.name, this.parent_node.ntype.infos ()));
-        Yaml.dbg ("    - prev_node : %s (%s - collection ? %s)".printf (this.prev_node.name, this.prev_node.ntype.infos (), this.prev_node.ntype.is_collection ().to_string ()));
-        bool suite = true;
-        if (this.prev_node.ntype.is_mapping () && this.prev_node.parent != null && this.prev_node.parent.ntype.is_sequence ()) {
-            if (!(this.prev_node.parent as Yaml.Sequence).close_block) {
-                (this.prev_node.parent as Yaml.Sequence).close_block = true;
-                Yaml.dbg ("    SET FALSE SUITE");
-//~                 suite = false;
-            }
+        if (this.prev_node.ntype.is_scalar () || (this.prev_node.ntype.is_single_pair () && this.prev_node.parent != null && this.prev_node.parent.ntype.is_mapping ())) {
+            this.prev_node = this.prev_node.parent;
         }
-        if (suite) {
-            Yaml.dbg ("    SUITE");
-            if (this.prev_node.ntype.is_scalar () || (this.prev_node.ntype.is_single_pair () && this.prev_node.parent != null && this.prev_node.parent.ntype.is_mapping ())) {
-                this.prev_node = this.prev_node.parent;
-            }
-            this.parent_node = this.prev_node.parent != null && this.prev_node.parent != this.root 
-                ? this.prev_node.parent
-                : this.root;
-            this.prev_node   = this.parent_node;
-        }
-        Yaml.dbg ("    - parent_node : %s (%s)".printf (this.parent_node.name, this.parent_node.ntype.infos ()));
-        Yaml.dbg ("    - prev_node : %s (%s - collection ? %s)".printf (this.prev_node.name, this.prev_node.ntype.infos (), this.prev_node.ntype.is_collection ().to_string ()));
-        Yaml.dbg (this.prev_node.to_string ());
-        Yaml.dbg (" ===== << ON BLOCK END ====================== ");
+        this.parent_node = this.prev_node.parent != null && this.prev_node.parent != this.root 
+            ? this.prev_node.parent
+            : this.root;
+        this.prev_node = this.parent_node;
     }
 
     /**
@@ -450,34 +438,12 @@ public class Pluie.Yaml.Processor
         }
     }
 
-    /**
-     *
-     */
-    private void on_value ()
-    {
-        var e = this.get_next_event();
-        if (e.evtype.is_scalar ()) {
-            this.event = this.next_event ();
-            this.on_tag (false);
-            this.node = new Yaml.Scalar (this.parent_node, this.event.data["data"]);
-            this.change = true;
-        }
-        else if (e.evtype.is_anchor ()) {
-            this.event = this.next_event ();
-            this.on_anchor ();
-        }
-        else if (e.evtype.is_alias ()) {
-            this.event = this.next_event ();
-            this.on_alias ();
-        }
-    }
-
     /**
      *
      */
     private void on_scalar (bool entry = false)
     {
-        if (this.ckey != null && this.parent_node.ntype.is_mapping ()) {
+        if (this.ckey != null && this.parent_node.ntype.is_collection ()) {
             this.node = new Yaml.Mapping.with_scalar (this.parent_node, this.ckey, this.event.data["data"]);
         }
         else {
@@ -491,7 +457,9 @@ public class Pluie.Yaml.Processor
      */
     private void on_anchor ()
     {
-        this.idAnchor = this.event.data["id"];
+        if (this.event.data != null) {
+            this.idAnchor = this.event.data["id"];
+        }
     }
 
     /**
@@ -499,12 +467,14 @@ public class Pluie.Yaml.Processor
      */
     private void on_alias ()
     {
-        this.idAnchor      = this.event.data["id"];
-        Yaml.Node? refnode = this.anchors.get(this.idAnchor);
-        if (refnode != null) {
-            this.node = refnode.clone_node (this.ckey);
-            this.parent_node.add (this.node);
-            this.prev_node = this.node;
+        if (this.event.data != null) {
+            this.idAnchor      = this.event.data["id"];
+            Yaml.Node? refnode = this.anchors.get(this.idAnchor);
+            if (refnode != null) {
+                this.node = refnode.clone_node (this.ckey);
+                this.parent_node.add (this.node);
+                this.prev_node = this.node;
+            }
         }
     }
 
@@ -515,7 +485,6 @@ public class Pluie.Yaml.Processor
     {
         this.node         = new Yaml.Sequence (this.parent_node, this.ckey);
         this.change       = true;
-//~         this.beginFlowSeq = true;
     }
 
     /**
@@ -530,10 +499,8 @@ public class Pluie.Yaml.Processor
             this.on_tag (true);
             if (this.event.evtype.is_scalar ()) {
                 this.ckey = this.event.data["data"];
-                Yaml.dbg (" >> node name : %s".printf (this.ckey));
             }
             var e = this.get_next_value_event();
-//~             Yaml.dbg (e.evtype.infos ());
             if (e!=null) {
                 if ( e.evtype.is_sequence_start ()) {
                     this.on_sequence_start ();
@@ -562,10 +529,8 @@ public class Pluie.Yaml.Processor
      */
     private void add_anchor_if_needed ()
     {
-        if (this.idAnchor != null) {
-            if (this.node != null) {
-                this.anchors.set(this.idAnchor, this.node);
-            }
+        if (this.idAnchor != null && this.node != null) {
+            this.anchors.set(this.idAnchor, this.node);
             this.idAnchor = null;
         }
     }
@@ -579,6 +544,7 @@ public class Pluie.Yaml.Processor
             Yaml.dbg (Log.METHOD);
             Yaml.dbg (this.node.name);
             Yaml.dbg (this.node.ntype.infos ());
+            Yaml.dbg ("anchor ? %s".printf (this.idAnchor));
         }
         if (this.change) {
             if (this.node.parent.ntype.is_sequence ()) {
@@ -612,6 +578,7 @@ public class Pluie.Yaml.Processor
             this.isEntryMapping = false;
             this.change    = false;
             this.isEntry   = false;
+            this.ckey      = null;
         }
     }
 
diff --git a/src/vala/Pluie/Yaml.global.vala b/src/vala/Pluie/Yaml.global.vala
index baf4c2a..c4e2334 100644
--- a/src/vala/Pluie/Yaml.global.vala
+++ b/src/vala/Pluie/Yaml.global.vala
@@ -327,6 +327,14 @@ namespace Pluie.Yaml
             return this == EVT.DOCUMENT_START;
         }
 
+        /**
+          * @return event is stream start event
+          */
+        public bool is_stream_start ()
+        {
+            return this == EVT.STREAM_START;
+        }
+
     }
 
     /**