diff --git a/CHANGELOG.md b/CHANGELOG.md
index b97b2c7..bd317f2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 [English](CHANGELOG_EN.md) | 中文
 
+## v1.8.6-fix1
+
+- 修复 AnimatorParameterDriverManager 中的随机整数生成逻辑
+- 修正 AnimatorParameterDriverManager 中随机整数生成的范围，确保包含最大值
+- 修正复制参数操作的范围转换逻辑
+- 更新 ModelParameterDriver 和 BlueprintID 组件的文档注释，增强可读性和理解性
+
 ## v1.8.6
 
 - 新增 `ModelParameterDriver` 组件，支持在动画状态机中自定义参数控制
diff --git a/CHANGELOG_EN.md b/CHANGELOG_EN.md
index 4c02aa1..fd2b97b 100644
--- a/CHANGELOG_EN.md
+++ b/CHANGELOG_EN.md
@@ -2,6 +2,13 @@
 
 English | [中文](CHANGELOG.md)
 
+## v1.8.6-fix1
+
+- Fixed random integer generation logic in AnimatorParameterDriverManager
+- Fixed random integer generation range in AnimatorParameterDriverManager to ensure maximum value is included
+- Fixed range conversion logic for copy parameter operation
+- Updated documentation comments for ModelParameterDriver and BlueprintID components to improve readability and understanding
+
 ## v1.8.6
 
 - Added `ModelParameterDriver` component, supporting custom parameter control in animation state machines
diff --git a/DuckovCustomModel.Core/Managers/AnimatorParameterDriverManager.cs b/DuckovCustomModel.Core/Managers/AnimatorParameterDriverManager.cs
index 34b1f85..65f74be 100644
--- a/DuckovCustomModel.Core/Managers/AnimatorParameterDriverManager.cs
+++ b/DuckovCustomModel.Core/Managers/AnimatorParameterDriverManager.cs
@@ -131,7 +131,7 @@ private static void ApplyParameterAsRandom(ModelParameterDriver.Parameter parame
                     animator.SetFloat(targetParam.name, randomFloat);
                     break;
                 case AnimatorControllerParameterType.Int:
-                    var randomInt = Random.Range((int)parameter.valueMin, (int)parameter.valueMax);
+                    var randomInt = Random.Range((int)parameter.valueMin, (int)parameter.valueMax + 1);
                     animator.SetInteger(targetParam.name, randomInt);
                     break;
                 case AnimatorControllerParameterType.Bool:
@@ -169,10 +169,10 @@ private static void ApplyParameterAsCopy(ModelParameterDriver.Parameter paramete
             {
                 var sourceMin = parameter.sourceMin;
                 var sourceMax = parameter.sourceMax;
-                var targetMin = parameter.valueMin;
-                var targetMax = parameter.valueMax;
+                var targetMin = parameter.destMin;
+                var targetMax = parameter.destMax;
 
-                if (sourceMax - sourceMin != 0)
+                if (Mathf.Abs(sourceMax - sourceMin) > Mathf.Epsilon)
                     finalValue = targetMin + (sourceValue - sourceMin) * (targetMax - targetMin) /
                         (sourceMax - sourceMin);
             }
diff --git a/DuckovCustomModel.Core/MonoBehaviours/Animators/ModelParameterDriver.cs b/DuckovCustomModel.Core/MonoBehaviours/Animators/ModelParameterDriver.cs
index 4a351d0..afb3d13 100644
--- a/DuckovCustomModel.Core/MonoBehaviours/Animators/ModelParameterDriver.cs
+++ b/DuckovCustomModel.Core/MonoBehaviours/Animators/ModelParameterDriver.cs
@@ -5,6 +5,13 @@
 
 namespace DuckovCustomModel.Core.MonoBehaviours.Animators
 {
+    /// <summary>
+    ///     Drives animator parameters when animation states are entered, similar to Unity's built-in Animator Parameter
+    ///     Driver.
+    ///     Attach this component to animation state machine states to automatically set, add, randomize, or copy animator
+    ///     parameters
+    ///     when the state is entered. Useful for controlling complex animation logic and parameter changes in a modular way.
+    /// </summary>
     public class ModelParameterDriver : StateMachineBehaviour, ISerializationCallbackReceiver
     {
         public enum ChangeType
@@ -84,7 +91,18 @@ public class Parameter
             public float destMin;
             public float destMax;
 
+            /// <summary>
+            ///     Runtime-only cached reference to the destination parameter.
+            ///     Populated during initialization for performance optimization.
+            ///     Not intended to be set manually or serialized.
+            /// </summary>
             public object? DestParam;
+
+            /// <summary>
+            ///     Runtime-only cached reference to the source parameter.
+            ///     Populated during initialization for performance optimization.
+            ///     Not intended to be set manually or serialized.
+            /// </summary>
             public object? SourceParam;
         }
     }
diff --git a/DuckovCustomModel.Core/MonoBehaviours/Packages/BlueprintID.cs b/DuckovCustomModel.Core/MonoBehaviours/Packages/BlueprintID.cs
index ca1d5e0..29f7e51 100644
--- a/DuckovCustomModel.Core/MonoBehaviours/Packages/BlueprintID.cs
+++ b/DuckovCustomModel.Core/MonoBehaviours/Packages/BlueprintID.cs
@@ -3,10 +3,14 @@
 
 namespace DuckovCustomModel.Core.MonoBehaviours.Packages
 {
+    /// <summary>
+    ///     Assigns unique identifiers to game objects. Currently a placeholder for future functionality.
+    /// </summary>
     [AddComponentMenu("Duckov Custom Model/Blueprint ID")]
     [DisallowMultipleComponent]
     public class BlueprintID : MonoBehaviour
     {
+        [Tooltip("Unique identifier for this game object")]
         public string id = string.Empty;
 
         [ContextMenu("Generate New ID")]
diff --git a/DuckovCustomModel/Constant.cs b/DuckovCustomModel/Constant.cs
index c4c479d..91abb1c 100644
--- a/DuckovCustomModel/Constant.cs
+++ b/DuckovCustomModel/Constant.cs
@@ -4,7 +4,7 @@ public static class Constant
     {
         public const string ModID = "DuckovCustomModel";
         public const string ModName = "Duckov Custom Model";
-        public const string ModVersion = "1.8.6";
+        public const string ModVersion = "1.8.6-fix1";
         public const string HarmonyId = "com.ritsukage.DuckovCustomModel";
     }
 }