diff --git a/Client/App.xaml.cs b/Client/App.xaml.cs
index c4acbb2..cad17d7 100644
--- a/Client/App.xaml.cs
+++ b/Client/App.xaml.cs
@@ -15,6 +15,8 @@ using System.Reflection;
 using Client.Application.Views;
 using Client.Domain.ViewModels;
 using Client.Application.ViewModels;
+using Client.Domain.Helpers;
+using Client.Infrastructure.Helpers;
 
 namespace Client
 {
@@ -57,7 +59,8 @@ namespace Client
         private void ConfigureServices(IServiceCollection services)
         {
             IConfiguration config = new ConfigurationBuilder()
-                .AddJsonFile("config.json", optional: true, reloadOnChange: false)
+                .AddJsonFile("config.json", optional: false, reloadOnChange: true)
+                .AddJsonFile("experience.json", optional: false, reloadOnChange: true)
                 .Build();
 
             services
@@ -80,6 +83,7 @@ namespace Client
                         config.GetValue<string>("ConnectionPipeName") ?? ""
                     )
                 )
+                .AddSingleton(typeof(ExperienceHelperInterface), typeof(ConfigurationExperienceHelper))
 
                 .AddTransient(typeof(EntityFactoryInterface<Hero>), typeof(EntityFactory<Hero>))
                 .AddTransient(typeof(EntityFactoryInterface<Drop>), typeof(EntityFactory<Drop>))
diff --git a/Client/Application/ViewModels/HeroSummaryInfoViewModel.cs b/Client/Application/ViewModels/HeroSummaryInfoViewModel.cs
index fe2dd35..9628a13 100644
--- a/Client/Application/ViewModels/HeroSummaryInfoViewModel.cs
+++ b/Client/Application/ViewModels/HeroSummaryInfoViewModel.cs
@@ -22,7 +22,7 @@ namespace Client.Application.ViewModels
         {
             get
             {
-                //toto race string
+                //todo race string
                 return hero.Phenotype.Race.ToString();
             }
         }
@@ -34,13 +34,6 @@ namespace Client.Application.ViewModels
                 return hero.Phenotype.Class.ToString();
             }
         }
-        public string Level
-        {
-            get
-            {
-                return hero.ExperienceInfo.Level.ToString();
-            }
-        }
         public Vector3 Position
         {
             get
@@ -84,11 +77,7 @@ namespace Client.Application.ViewModels
 
         private void ExperienceInfo_PropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
         {
-            if (e.PropertyName == "Level")
-            {
-                OnPropertyChanged("Level");
-            }
-            if (e.PropertyName == "Exp" || e.PropertyName == "ExpToLevel")
+            if (e.PropertyName == "Exp" || e.PropertyName == "ExpToLevel" || e.PropertyName == "Level")
             {
                 OnPropertyChanged("Experience");
             }
@@ -102,23 +91,6 @@ namespace Client.Application.ViewModels
             }
         }
 
-        private void Hero_PropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
-        {
-            if (e.PropertyName == "Fullname")
-            {
-                OnPropertyChanged("Fullname");
-            }
-            if (e.PropertyName == "Phenotype")
-            {
-                OnPropertyChanged("Class");
-                OnPropertyChanged("Race");
-            }
-            if (e.PropertyName == "ExperienceInfo")
-            {
-                OnPropertyChanged("Level");
-            }
-        }
-
         private readonly Hero hero;
     }
 }
diff --git a/Client/Application/Views/MainWindow.xaml b/Client/Application/Views/MainWindow.xaml
index 025530b..e7573ff 100644
--- a/Client/Application/Views/MainWindow.xaml
+++ b/Client/Application/Views/MainWindow.xaml
@@ -31,7 +31,7 @@
         <ListBox Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ChatMessages, Mode=OneWay}">
             <ListBox.ItemTemplate>
                 <DataTemplate>
-                    <TextBlock FontSize="12" Text="{Binding Path=Text, Mode=OneWay}" Foreground="{Binding Path=Color, Mode=OneWay}" />
+                    <TextBlock Text="{Binding Path=Text, Mode=OneWay}" Foreground="{Binding Path=Color, Mode=OneWay}" />
                 </DataTemplate>
             </ListBox.ItemTemplate>
         </ListBox>
@@ -97,26 +97,26 @@
         <StackPanel Grid.Row="1" Grid.Column="1" DataContext="{Binding Hero, Mode=OneWay}" Margin="4">
             <TextBlock FontSize="16" Text="{Binding Path=Fullname, Mode=OneWay}"></TextBlock>
             <StackPanel Orientation="Horizontal">
-                <TextBlock FontSize="12">
+                <TextBlock>
                     <TextBlock.Text>
                         <MultiBinding StringFormat="{}{0}, {1} {2}lvl">
                             <Binding Path="Race"/>
                             <Binding Path="Class"/>
-                            <Binding Path="Level"/>
+                            <Binding Path="Experience.Level"/>
                         </MultiBinding>
                     </TextBlock.Text>
                 </TextBlock>
             </StackPanel>
             <DockPanel>
                 <StackPanel DockPanel.Dock="Left" Margin="0 0 5 0">
-                    <TextBlock FontSize="12" Padding="0 0 0 3">Position:</TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">Exp:</TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">Weight:</TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">Adena:</TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">Inv. slots:</TextBlock>
+                    <TextBlock Padding="0 0 0 3">Position:</TextBlock>
+                    <TextBlock Padding="0 0 0 3">Exp:</TextBlock>
+                    <TextBlock Padding="0 0 0 3">Weight:</TextBlock>
+                    <TextBlock Padding="0 0 0 3">Adena:</TextBlock>
+                    <TextBlock Padding="0 0 0 3">Inv. slots:</TextBlock>
                 </StackPanel>
                 <StackPanel>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">
+                    <TextBlock Padding="0 0 0 3">
                         <TextBlock.Text>
                             <MultiBinding StringFormat="{}{0:F0}, {1:F0}, {2:F0}">
                                 <Binding Path="Position.X"/>
@@ -125,7 +125,7 @@
                             </MultiBinding>
                         </TextBlock.Text>
                     </TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">
+                    <TextBlock Padding="0 0 0 3">
                         <TextBlock.Text>
                             <MultiBinding StringFormat="{}{0}/{1}">
                                 <Binding Path="Experience.Exp"/>
@@ -133,7 +133,7 @@
                             </MultiBinding>
                         </TextBlock.Text>
                     </TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">
+                    <TextBlock Padding="0 0 0 3">
                         <TextBlock.Text>
                             <MultiBinding StringFormat="{}{0}/{1}">
                                 <Binding Path="Weight.Current"/>
@@ -141,8 +141,8 @@
                             </MultiBinding>
                         </TextBlock.Text>
                     </TextBlock>
-                    <TextBlock FontSize="12" Text="{Binding Path=Money}" Padding="0 0 0 3"></TextBlock>
-                    <TextBlock FontSize="12" Padding="0 0 0 3">
+                    <TextBlock Text="{Binding Path=Money}" Padding="0 0 0 3"></TextBlock>
+                    <TextBlock Padding="0 0 0 3">
                         <TextBlock.Text>
                             <MultiBinding StringFormat="{}{0}/{1}">
                                 <Binding Path="Slots.Current"/>
diff --git a/Client/Client.csproj b/Client/Client.csproj
index c53f51d..f4a6362 100644
--- a/Client/Client.csproj
+++ b/Client/Client.csproj
@@ -12,6 +12,9 @@
 		<Content Include="config.json">
 			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
 		</Content>
+		<Content Include="experience.json">
+			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</Content>
 	</ItemGroup>
 
 	<ItemGroup>
diff --git a/Client/Domain/Helpers/ExperienceHelperInterface.cs b/Client/Domain/Helpers/ExperienceHelperInterface.cs
new file mode 100644
index 0000000..f61abed
--- /dev/null
+++ b/Client/Domain/Helpers/ExperienceHelperInterface.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Helpers
+{
+    public interface ExperienceHelperInterface
+    {
+        ulong GetExperienceToLevel(uint level);
+    }
+}
diff --git a/Client/Domain/Service/EntityHandler.cs b/Client/Domain/Service/EntityHandler.cs
index d6bf64e..a9c9a04 100644
--- a/Client/Domain/Service/EntityHandler.cs
+++ b/Client/Domain/Service/EntityHandler.cs
@@ -30,7 +30,7 @@ namespace Client.Domain.Service
                 if (entity != null && entities.ContainsKey(entity.Id))
                 {
                     factory.Update(entities[entity.Id], content);
-                    OnUpdate(entity);
+                    OnUpdate(entities[entity.Id]);
                 }
             }
             else if (operation == MessageOperationEnum.Delete)
diff --git a/Client/Domain/Service/HeroHandler.cs b/Client/Domain/Service/HeroHandler.cs
index 2bf2cd4..97e5154 100644
--- a/Client/Domain/Service/HeroHandler.cs
+++ b/Client/Domain/Service/HeroHandler.cs
@@ -1,5 +1,6 @@
 using Client.Domain.Entities;
 using Client.Domain.Factories;
+using Client.Domain.Helpers;
 using Client.Domain.ViewModels;
 using System;
 using System.Collections.Generic;
@@ -14,17 +15,29 @@ namespace Client.Domain.Service
         public override void OnCreate(Hero entity)
         {
             mainViewModel.CreateHero(entity);
+            entity.ExperienceInfo.ExpToLevel = experienceHelper.GetExperienceToLevel(entity.ExperienceInfo.Level + 1);
         }
+
+        public override void OnUpdate(Hero entity)
+        {
+            if (entity.ExperienceInfo != null)
+            {
+                entity.ExperienceInfo.ExpToLevel = experienceHelper.GetExperienceToLevel(entity.ExperienceInfo.Level + 1);
+            }
+        }
+
         public override void OnDelete(Hero entity)
         {
             mainViewModel.DeleteHero();
         }
 
-        public HeroHandler(EntityFactoryInterface<Hero> factory, MainViewModelInterface mainViewModel) : base(factory)
+        public HeroHandler(EntityFactoryInterface<Hero> factory, MainViewModelInterface mainViewModel, ExperienceHelperInterface experienceHelper) : base(factory)
         {
             this.mainViewModel = mainViewModel;
+            this.experienceHelper = experienceHelper;
         }
 
         private readonly MainViewModelInterface mainViewModel;
+        private readonly ExperienceHelperInterface experienceHelper;
     }
 }
diff --git a/Client/Domain/ValueObjects/ExperienceInfo.cs b/Client/Domain/ValueObjects/ExperienceInfo.cs
index b41d250..11b88f1 100644
--- a/Client/Domain/ValueObjects/ExperienceInfo.cs
+++ b/Client/Domain/ValueObjects/ExperienceInfo.cs
@@ -7,16 +7,12 @@ namespace Client.Domain.ValueObjects
         private uint level;
         private uint exp;
         private uint sp;
+        private ulong expToLevel;
 
-        public uint Level { get => level; set { if (value != level) { level = value; OnPropertyChanged("Level"); OnPropertyChanged("ExpToLevel"); } } }
+        public uint Level { get => level; set { if (value != level) { level = value; OnPropertyChanged("Level"); } } }
         public uint Exp { get => exp; set { if (value != exp) { exp = value; OnPropertyChanged("Exp"); } } }
         public uint Sp { get => sp; set { if (value != sp) { sp = value; OnPropertyChanged("Sp"); } } }
-        public uint ExpToLevel {
-            get
-            {
-                return level * 200;
-            }
-        }
+        public ulong ExpToLevel { get => expToLevel; set { if (value != expToLevel) { expToLevel = value; OnPropertyChanged("ExpToLevel"); } } }
 
         public ExperienceInfo(uint level, uint exp, uint sp)
         {
diff --git a/Client/Infrastructure/Helpers/ConfigurationExperienceHelper.cs b/Client/Infrastructure/Helpers/ConfigurationExperienceHelper.cs
new file mode 100644
index 0000000..12ee47f
--- /dev/null
+++ b/Client/Infrastructure/Helpers/ConfigurationExperienceHelper.cs
@@ -0,0 +1,54 @@
+using Client.Domain.Helpers;
+using Microsoft.Extensions.Configuration;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Web;
+
+namespace Client.Infrastructure.Helpers
+{
+    public class ConfigurationExperienceHelper : ExperienceHelperInterface
+    {
+        public ulong GetExperienceToLevel(uint level)
+        {
+            if (experienceToLevel.Count == 0)
+            {
+                var items = configuration.GetSection("experience").Get<List<ExpInfo>>();
+                if (items != null)
+                {
+                    foreach (var item in items)
+                    {
+                        experienceToLevel[item.level] = item.toLevel;
+                    }
+                }
+            }
+            if (experienceToLevel.TryGetValue(level, out ulong result))
+            {
+                return result;
+            }
+            return 0;
+        }
+
+        public ConfigurationExperienceHelper(IConfiguration configuration)
+        {
+            this.configuration = configuration;
+        }
+
+        private readonly IConfiguration configuration;
+        private Dictionary<uint, ulong> experienceToLevel = new Dictionary<uint, ulong>();
+
+        public class ExpInfo
+        {
+            public uint level { get; set; }
+            public ulong toLevel { get; set; }
+
+            /* public ExpInfo(uint level, ulong toLevel)
+             {
+                 this.level = level;
+                 this.toLevel = toLevel;
+             }*/
+        }
+    }
+}
diff --git a/Client/experience.json b/Client/experience.json
new file mode 100644
index 0000000..0b4f3da
--- /dev/null
+++ b/Client/experience.json
@@ -0,0 +1,352 @@
+{
+    "experience": [
+      {
+        "level": "1",
+        "tolevel": "0"
+      },
+      {
+        "level": "2",
+        "tolevel": "68"
+      },
+      {
+        "level": "3",
+        "tolevel": "363"
+      },
+      {
+        "level": "4",
+        "tolevel": "1168"
+      },
+      {
+        "level": "5",
+        "tolevel": "2884"
+      },
+      {
+        "level": "6",
+        "tolevel": "6038"
+      },
+      {
+        "level": "7",
+        "tolevel": "11287"
+      },
+      {
+        "level": "8",
+        "tolevel": "19423"
+      },
+      {
+        "level": "9",
+        "tolevel": "31378"
+      },
+      {
+        "level": "10",
+        "tolevel": "48229"
+      },
+      {
+        "level": "11",
+        "tolevel": "71201"
+      },
+      {
+        "level": "12",
+        "tolevel": "101676"
+      },
+      {
+        "level": "13",
+        "tolevel": "141192"
+      },
+      {
+        "level": "14",
+        "tolevel": "191452"
+      },
+      {
+        "level": "15",
+        "tolevel": "254327"
+      },
+      {
+        "level": "16",
+        "tolevel": "331864"
+      },
+      {
+        "level": "17",
+        "tolevel": "426284"
+      },
+      {
+        "level": "18",
+        "tolevel": "539995"
+      },
+      {
+        "level": "19",
+        "tolevel": "675590"
+      },
+      {
+        "level": "20",
+        "tolevel": "835854"
+      },
+      {
+        "level": "21",
+        "tolevel": "1023775"
+      },
+      {
+        "level": "22",
+        "tolevel": "1242536"
+      },
+      {
+        "level": "23",
+        "tolevel": "1495531"
+      },
+      {
+        "level": "24",
+        "tolevel": "1786365"
+      },
+      {
+        "level": "25",
+        "tolevel": "2118860"
+      },
+      {
+        "level": "26",
+        "tolevel": "2497059"
+      },
+      {
+        "level": "27",
+        "tolevel": "2925229"
+      },
+      {
+        "level": "28",
+        "tolevel": "3407873"
+      },
+      {
+        "level": "29",
+        "tolevel": "3949727"
+      },
+      {
+        "level": "30",
+        "tolevel": "4555766"
+      },
+      {
+        "level": "31",
+        "tolevel": "5231213"
+      },
+      {
+        "level": "32",
+        "tolevel": "5981539"
+      },
+      {
+        "level": "33",
+        "tolevel": "6812472"
+      },
+      {
+        "level": "34",
+        "tolevel": "7729999"
+      },
+      {
+        "level": "35",
+        "tolevel": "8740372"
+      },
+      {
+        "level": "36",
+        "tolevel": "9850111"
+      },
+      {
+        "level": "37",
+        "tolevel": "11066012"
+      },
+      {
+        "level": "38",
+        "tolevel": "12395149"
+      },
+      {
+        "level": "39",
+        "tolevel": "13844879"
+      },
+      {
+        "level": "40",
+        "tolevel": "15422851"
+      },
+      {
+        "level": "41",
+        "tolevel": "17137002"
+      },
+      {
+        "level": "42",
+        "tolevel": "18995573"
+      },
+      {
+        "level": "43",
+        "tolevel": "21007103"
+      },
+      {
+        "level": "44",
+        "tolevel": "23180442"
+      },
+      {
+        "level": "45",
+        "tolevel": "25524751"
+      },
+      {
+        "level": "46",
+        "tolevel": "28049509"
+      },
+      {
+        "level": "47",
+        "tolevel": "30764519"
+      },
+      {
+        "level": "48",
+        "tolevel": "33679907"
+      },
+      {
+        "level": "49",
+        "tolevel": "36806133"
+      },
+      {
+        "level": "50",
+        "tolevel": "40153995"
+      },
+      {
+        "level": "51",
+        "tolevel": "45524865"
+      },
+      {
+        "level": "52",
+        "tolevel": "51262204"
+      },
+      {
+        "level": "53",
+        "tolevel": "57383682"
+      },
+      {
+        "level": "54",
+        "tolevel": "63907585"
+      },
+      {
+        "level": "55",
+        "tolevel": "70852742"
+      },
+      {
+        "level": "56",
+        "tolevel": "80700339"
+      },
+      {
+        "level": "57",
+        "tolevel": "91162131"
+      },
+      {
+        "level": "58",
+        "tolevel": "102265326"
+      },
+      {
+        "level": "59",
+        "tolevel": "114038008"
+      },
+      {
+        "level": "60",
+        "tolevel": "126509030"
+      },
+      {
+        "level": "61",
+        "tolevel": "146307211"
+      },
+      {
+        "level": "62",
+        "tolevel": "167243291"
+      },
+      {
+        "level": "63",
+        "tolevel": "189363788"
+      },
+      {
+        "level": "64",
+        "tolevel": "212716741"
+      },
+      {
+        "level": "65",
+        "tolevel": "237351413"
+      },
+      {
+        "level": "66",
+        "tolevel": "271973532"
+      },
+      {
+        "level": "67",
+        "tolevel": "308441375"
+      },
+      {
+        "level": "68",
+        "tolevel": "346825235"
+      },
+      {
+        "level": "69",
+        "tolevel": "387197529"
+      },
+      {
+        "level": "70",
+        "tolevel": "429632402"
+      },
+      {
+        "level": "71",
+        "tolevel": "474205751"
+      },
+      {
+        "level": "72",
+        "tolevel": "532692055"
+      },
+      {
+        "level": "73",
+        "tolevel": "606319094"
+      },
+      {
+        "level": "74",
+        "tolevel": "696376867"
+      },
+      {
+        "level": "75",
+        "tolevel": "804219972"
+      },
+      {
+        "level": "76",
+        "tolevel": "931275828"
+      },
+      {
+        "level": "77",
+        "tolevel": "1151275834"
+      },
+      {
+        "level": "78",
+        "tolevel": "1511275834"
+      },
+      {
+        "level": "79",
+        "tolevel": "2099275834"
+      },
+      {
+        "level": "80",
+        "tolevel": "4200000000"
+      },
+      {
+        "level": "81",
+        "tolevel": "6300000000"
+      },
+      {
+        "level": "82",
+        "tolevel": "8820000000"
+      },
+      {
+        "level": "83",
+        "tolevel": "11844000000"
+      },
+      {
+        "level": "84",
+        "tolevel": "15472800000"
+      },
+      {
+        "level": "85",
+        "tolevel": "19827360000"
+      },
+      {
+        "level": "86",
+        "tolevel": "25314105600"
+      },
+      {
+        "level": "87",
+        "tolevel": "32211728640"
+      }
+    ]
+}
\ No newline at end of file