diff --git a/csharp/SVGLDLibs/SVGLDLibs/Models/ConfigurationResponseModel.cs b/csharp/SVGLDLibs/SVGLDLibs/Models/Configuration.cs
similarity index 88%
rename from csharp/SVGLDLibs/SVGLDLibs/Models/ConfigurationResponseModel.cs
rename to csharp/SVGLDLibs/SVGLDLibs/Models/Configuration.cs
index 6ec6bec..5c44e18 100644
--- a/csharp/SVGLDLibs/SVGLDLibs/Models/ConfigurationResponseModel.cs
+++ b/csharp/SVGLDLibs/SVGLDLibs/Models/Configuration.cs
@@ -3,9 +3,9 @@ using System.Runtime.Serialization;
 
 namespace SVGLDLibs.Models
 {
-    public class ConfigurationResponseModel
+    public class Configuration
     {
-        public ConfigurationResponseModel(AvailableContainerModel mainContainer)
+        public Configuration(AvailableContainerModel mainContainer)
         {
             MainContainer = mainContainer;
             AvailableContainers = new List<AvailableContainerModel>();
diff --git a/csharp/SVGLDLibs/SVGLDLibs/Models/EditorState.cs b/csharp/SVGLDLibs/SVGLDLibs/Models/EditorState.cs
new file mode 100644
index 0000000..163620c
--- /dev/null
+++ b/csharp/SVGLDLibs/SVGLDLibs/Models/EditorState.cs
@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+namespace SVGLDLibs.Models
+{
+    public class EditorState
+    {
+
+        [DataMember(EmitDefaultValue = false)]
+        public List<HistoryState> history { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public int historyCurrentStep { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public Configuration configuration { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/csharp/SVGLDLibs/SVGLDLibs/Models/GetFeedbackRequest.cs b/csharp/SVGLDLibs/SVGLDLibs/Models/GetFeedbackRequest.cs
index 4348c5d..24c953e 100644
--- a/csharp/SVGLDLibs/SVGLDLibs/Models/GetFeedbackRequest.cs
+++ b/csharp/SVGLDLibs/SVGLDLibs/Models/GetFeedbackRequest.cs
@@ -5,6 +5,6 @@ namespace SVGLDLibs.Models
     public class GetFeedbackRequest
     {
         [DataMember(EmitDefaultValue = false)]
-        public ApplicationStateModel ApplicationState { get; set; }
+        public HistoryState ApplicationState { get; set; }
     }
 }
\ No newline at end of file
diff --git a/csharp/SVGLDLibs/SVGLDLibs/Models/ApplicationStateModel.cs b/csharp/SVGLDLibs/SVGLDLibs/Models/HistoryState.cs
similarity index 92%
rename from csharp/SVGLDLibs/SVGLDLibs/Models/ApplicationStateModel.cs
rename to csharp/SVGLDLibs/SVGLDLibs/Models/HistoryState.cs
index 29c9523..7c2cc88 100644
--- a/csharp/SVGLDLibs/SVGLDLibs/Models/ApplicationStateModel.cs
+++ b/csharp/SVGLDLibs/SVGLDLibs/Models/HistoryState.cs
@@ -1,29 +1,29 @@
-using System.Collections.Generic;
-using System.Runtime.Serialization;
-
-namespace SVGLDLibs.Models
-{
-    public class ApplicationStateModel
-    {
-        [DataMember(EmitDefaultValue = false)]
-        public string lastAction;
-
-        [DataMember(EmitDefaultValue = false)]
-        public string mainContainer;
-
-        [DataMember(EmitDefaultValue = false)]
-        public Dictionary<string, ContainerModel> containers;
-
-        [DataMember(EmitDefaultValue = false)]
-        public string selectedContainerId;
-
-        [DataMember(EmitDefaultValue = false)]
-        public Dictionary<string, string> typeCounters;
-
-        [DataMember(EmitDefaultValue = false)]
-        public Dictionary<string, SymbolModel> symbols;
-
-        [DataMember(EmitDefaultValue = false)]
-        public string selectedSymbolId;
-    }
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+namespace SVGLDLibs.Models
+{
+    public class HistoryState
+    {
+        [DataMember(EmitDefaultValue = false)]
+        public string lastAction;
+
+        [DataMember(EmitDefaultValue = false)]
+        public string mainContainer;
+
+        [DataMember(EmitDefaultValue = false)]
+        public Dictionary<string, ContainerModel> containers;
+
+        [DataMember(EmitDefaultValue = false)]
+        public string selectedContainerId;
+
+        [DataMember(EmitDefaultValue = false)]
+        public Dictionary<string, string> typeCounters;
+
+        [DataMember(EmitDefaultValue = false)]
+        public Dictionary<string, SymbolModel> symbols;
+
+        [DataMember(EmitDefaultValue = false)]
+        public string selectedSymbolId;
+    }
 }
\ No newline at end of file
diff --git a/csharp/SVGLDLibs/SVGLDLibs/Models/SetContainerListRequest.cs b/csharp/SVGLDLibs/SVGLDLibs/Models/SetContainerListRequest.cs
index f67d021..f678cd4 100644
--- a/csharp/SVGLDLibs/SVGLDLibs/Models/SetContainerListRequest.cs
+++ b/csharp/SVGLDLibs/SVGLDLibs/Models/SetContainerListRequest.cs
@@ -17,6 +17,6 @@ namespace SVGLDLibs.Models
         public ContainerModel NextContainer { get; set; }
 
         [DataMember(EmitDefaultValue = false)]
-        public ApplicationStateModel ApplicationState { get; set; }
+        public HistoryState ApplicationState { get; set; }
     }
 }
\ No newline at end of file
diff --git a/csharp/SVGLDLibs/SVGLDWebAPI/Controllers/SVGLDController.cs b/csharp/SVGLDLibs/SVGLDWebAPI/Controllers/SVGLDController.cs
index b12a231..a1c936f 100644
--- a/csharp/SVGLDLibs/SVGLDWebAPI/Controllers/SVGLDController.cs
+++ b/csharp/SVGLDLibs/SVGLDWebAPI/Controllers/SVGLDController.cs
@@ -20,8 +20,8 @@ public class SVGLDController : ControllerBase
         return true;
     }
 
-    [HttpPost(Name = nameof(SVGLDLibs.Models.ApplicationStateModel))]
-    public bool ApplicationStateModel(ApplicationStateModel model)
+    [HttpPost(Name = nameof(SVGLDLibs.Models.HistoryState))]
+    public bool ApplicationStateModel(HistoryState model)
     {
         return true;
     }
@@ -44,8 +44,8 @@ public class SVGLDController : ControllerBase
         return true;
     }
 
-    [HttpPost(Name = nameof(SVGLDLibs.Models.ConfigurationResponseModel))]
-    public bool ConfigurationResponseModel(ConfigurationResponseModel model)
+    [HttpPost(Name = nameof(SVGLDLibs.Models.Configuration))]
+    public bool ConfigurationResponseModel(Configuration model)
     {
         return true;
     }