diff --git a/Rules/FUI0001.md b/Rules/FUI0001.md
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+# FUI0001
+
+## Target 'xxx' not 'FUI.IElement'
+
+This error occurs when the target element is not inherited from FUI.IElement.
+
+```c#
+[Binding("txt_test", nameof(UnityEngine.UI.Text.text))]
+public string TestString{get; set;} => string.Empty
+```
+
+The UnityEngine.UI.Text is not inherited from FUI.IElement.
+
+<span style="color: #e6e6e6;">The following example resolves the error:</span>
+
+```c#
+[Binding("txt_test", nameof(TextElement.Text))]
+public string TestString{get; set;} => string.Empty
+```
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diff --git a/Rules/FUI0002.md b/Rules/FUI0002.md
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+# FUI0002
+
+## Target property 'xxx' not 'FUI.Bindable.BindableProperty<>'
+
+This error occurs when the target property is not inherited from FUI.Bindable.BindableProperty&lt;T&gt;.
+
+```c#
+[Binding("txt_test", nameof(TextElement.name))]
+public string TestString{get; set;} => string.Empty
+```
+
+The TextElement.name is not inherited from FUI.BindableProperty&lt;T&gt;.
+
+The following example resolves the error:
+
+```c#
+[Binding("txt_test", nameof(TextElement.Text))]
+public string TestString{get; set;} => string.Empty
+```
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diff --git a/Rules/FUI0003.md b/Rules/FUI0003.md
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+# FUI0003
+
+## Converter 'xxx' not 'FUI.IValueConverter&lt;,&gt;'.
+
+This error occurs when the ValueConverter is not inherited from FUI.IValueConverter&lt;,&gt;.
+
+```c#
+[Binding("txt_test", nameof(TextElement.Text), typeof(UnityEngine.GameObject))]
+public int TestInt{get; set;} => 0
+```
+
+The UnityEngine.GameObject is not inherited from FUI.IValueConverter&lt;,&gt;. 
+
+You can use other value converters or inherit custom value converters from FUI.IValueConverter&lt;,&gt;.
+
+The following example resolves the error:
+
+```c#
+[Binding("txt_test", nameof(TextElement.Text), typeof(IntToStringConverter))]
+public int TestInt{get; set;} => 0
+```
+
+or
+
+```c#
+public class CustomConverter : FUI.IValueConverter<int, string>{}
+
+[Binding("txt_test", nameof(TextElement.Text), typeof(CustomConverter))]
+public int TestInt{get; set;} => 0
+```
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diff --git a/Rules/FUI0004.md b/Rules/FUI0004.md
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diff --git a/Rules/FUI0005.md b/Rules/FUI0005.md
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diff --git a/Rules/FUI0006.md b/Rules/FUI0006.md
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diff --git a/Rules/FUI0007.md b/Rules/FUI0007.md
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diff --git a/Rules/FUI0008.md b/Rules/FUI0008.md
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diff --git a/Rules/FUI0009.md b/Rules/FUI0009.md
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