diff --git a/README.md b/README.md
index f33e0a5..e69de29 100644
--- a/README.md
+++ b/README.md
@@ -1,41 +0,0 @@
-# Please set your repository in file:
-- .golangci.yml
-
-# Add secret in your Gihub
-- GITHUB_TOKEN in dependabot_changelog
-- CHANGELOG_PAT in generate_changelog.yml (to Push on main)
-- DOC_PAT in page.yml (to generate documentation)
-
-# Show example below:
-
-<div align="center">
-    <a href="https://github.com/FrangipaneTeam/terraform-plugin-framework-supertype/releases/latest">
-      <img alt="Latest release" src="https://img.shields.io/github/v/release/FrangipaneTeam/terraform-plugin-framework-supertype?style=for-the-badge&logo=starship&color=C9CBFF&logoColor=D9E0EE&labelColor=302D41&include_prerelease&sort=semver" />
-    </a>
-    <a href="https://github.com/FrangipaneTeam/terraform-plugin-framework-supertype/pulse">
-      <img alt="Last commit" src="https://img.shields.io/github/last-commit/FrangipaneTeam/terraform-plugin-framework-supertype?style=for-the-badge&logo=starship&color=8bd5ca&logoColor=D9E0EE&labelColor=302D41"/>
-    </a>
-    <a href="https://github.com/FrangipaneTeam/terraform-plugin-framework-supertype/stargazers">
-      <img alt="Stars" src="https://img.shields.io/github/stars/FrangipaneTeam/terraform-plugin-framework-supertype?style=for-the-badge&logo=starship&color=c69ff5&logoColor=D9E0EE&labelColor=302D41" />
-    </a>
-    <a href="https://github.com/FrangipaneTeam/terraform-plugin-framework-supertype/issues">
-      <img alt="Issues" src="https://img.shields.io/github/issues/FrangipaneTeam/terraform-plugin-framework-supertype?style=for-the-badge&logo=bilibili&color=F5E0DC&logoColor=D9E0EE&labelColor=302D41" />
-    </a>
-</div>
-
-## terraform-plugin-framework-supertype
-
-supertype is a custom type of Terraform type issue from Terraform schema, like SuperShema it's a meta Objet and function to permit you to manipulate Go object and Terrform object.
-
-This is a try to solve these issues :
-
-* CustomType is defined in the Schema on each Attributes fields on resources and datasources.
-* Each kind of Terraform Type is take into account:
-* * Simple: String, Bool, Int64, Float64
-* * Array: List, Map, Set
-* * Nested: ListNested, MapNested, SetNested, SingleNested
-
-
-### Documentation
-
-For more information about the supertype, please refer to the [documentation](https://github.frangipane.io/terraform/supertype/why).
\ No newline at end of file
diff --git a/single_nested_type.go b/single_nested_type.go
index b1727b9..4cd76f3 100644
--- a/single_nested_type.go
+++ b/single_nested_type.go
@@ -23,18 +23,29 @@ type SingleNestedType struct {
 }
 
 func (t SingleNestedType) Equal(o attr.Type) bool {
-	other, ok := o.(basetypes.ObjectType)
+	switch o.(type) {
+	case SingleNestedType:
+		other, ok := o.(SingleNestedType)
+		if !ok {
+			return false
+		}
 
-	if !ok {
+		return t.ObjectType.Equal(other.ObjectType)
+	case basetypes.ObjectType:
+		other, ok := o.(basetypes.ObjectType)
+		if !ok {
+			return false
+		}
+
+		return t.ObjectType.Equal(other)
+	default:
 		return false
 	}
-
-	return t.ObjectType.Equal(other)
 }
 
 func (t SingleNestedType) String() string {
 	var res strings.Builder
-	res.WriteString("types.ObjectType[")
+	res.WriteString("supertypes.SingleNestedType[")
 	keys := make([]string, 0, len(t.AttrTypes))
 	for k := range t.AttrTypes {
 		keys = append(keys, k)
@@ -80,3 +91,8 @@ func (t SingleNestedType) ValueFromTerraform(ctx context.Context, in tftypes.Val
 
 	return value, nil
 }
+
+func (t SingleNestedType) ValueType(ctx context.Context) attr.Value {
+    // SingleNestedValue defined in the value type section
+    return SingleNestedValue{}
+}
\ No newline at end of file