diff --git a/pkg/tools/gen/genkcl.go b/pkg/tools/gen/genkcl.go
index f87eb837..2a3ddabc 100644
--- a/pkg/tools/gen/genkcl.go
+++ b/pkg/tools/gen/genkcl.go
@@ -127,7 +127,7 @@ func (k *kclGenerator) parserGoStructFieldTag(tag string) (string, string, error
 	tagMap := make(map[string]string, 0)
 	sp := strings.Split(tag, "`")
 	if len(sp) == 1 {
-		return "", "", errors.New("this field not found tag string like `` !")
+		return "", "", errors.New("this field not found tag string like ``")
 	}
 	value, ok := k.Lookup(sp[1], "kcl")
 	if !ok {
diff --git a/pkg/tools/gen/genkcl_jsonschema.go b/pkg/tools/gen/genkcl_jsonschema.go
index 293dfced..a0dabd75 100644
--- a/pkg/tools/gen/genkcl_jsonschema.go
+++ b/pkg/tools/gen/genkcl_jsonschema.go
@@ -179,7 +179,7 @@ func convertSchemaFromJsonSchema(ctx *convertContext, s *jsonschema.Schema, name
 			}
 			for i, prop := range *v {
 				val := prop.Schema
-				propSch := convertSchemaFromJsonSchema(ctx, val, "patternProperties" + strconv.Itoa(i))
+				propSch := convertSchemaFromJsonSchema(ctx, val, "patternProperties"+strconv.Itoa(i))
 				if propSch.IsSchema {
 					ctx.resultMap[propSch.schema.Name] = propSch
 				}
diff --git a/pkg/tools/gen/genkcl_test.go b/pkg/tools/gen/genkcl_test.go
index 5b810203..d12a5267 100644
--- a/pkg/tools/gen/genkcl_test.go
+++ b/pkg/tools/gen/genkcl_test.go
@@ -219,6 +219,8 @@ func TestGenKclFromYaml(t *testing.T) {
 	}
 }
 
+type TestData = data
+
 func TestGenKclFromJsonAndImports(t *testing.T) {
 	file := kclFile{}
 	g := &kclGenerator{}
@@ -240,13 +242,47 @@ func TestGenKclFromJsonAndImports(t *testing.T) {
 	}
 	file.Imports = append(file.Imports, importStmt)
 	configSchemaName := strings.Join([]string{importStmt.PkgName(), "AppConfiguration"}, ".")
-	// Add configurations
+	// Add the configuration `app1` at top level.
 	file.Config = append(file.Config, config{
 		Data:    data,
 		IsUnion: true,
 		Var:     "app1",
 		Name:    configSchemaName,
 	})
+	// Add the configuration `app2` at top level with more data configs.
+	data = append(data, TestData{
+		Key: "labels",
+		Value: config{
+			Name: "Labels",
+			Data: []TestData{{
+				Key:   "app",
+				Value: "nginx",
+			}},
+		},
+	})
+	data = append(data, TestData{
+		Key: "annotations",
+		Value: config{
+			Data: []TestData{{
+				Key: "app1",
+				Value: map[string]any{
+					"app": "nginx",
+				},
+			}, {
+				Key: "app2",
+				Value: config{
+					Name: "Annotation",
+					Data: []TestData{{
+						Key: "app1",
+						Value: map[string]string{
+							"app": "nginx",
+						},
+					},
+					},
+				},
+			}},
+		},
+	})
 	file.Config = append(file.Config, config{
 		Data:    data,
 		IsUnion: true,
@@ -280,6 +316,15 @@ app2: ac.AppConfiguration {
         }
         replicas = 2
     }
+    labels = Labels {
+        app = "nginx"
+    }
+    annotations = {
+        app1 = {"app": "nginx"}
+        app2 = Annotation {
+            app1 = {"app": "nginx"}
+        }
+    }
 }
 `)
 }
diff --git a/pkg/tools/gen/template.go b/pkg/tools/gen/template.go
index 560d3ef2..e852049e 100644
--- a/pkg/tools/gen/template.go
+++ b/pkg/tools/gen/template.go
@@ -37,6 +37,10 @@ var funcs = template.FuncMap{
 		_, ok := v.([]data)
 		return ok
 	},
+	"isKclConfig": func(v interface{}) bool {
+		_, ok := v.(config)
+		return ok
+	},
 	"isArray": func(v interface{}) bool {
 		_, ok := v.([]interface{})
 		return ok
@@ -94,15 +98,18 @@ func formatValue(v interface{}) string {
 			return "True"
 		}
 		return "False"
+	case map[string]bool:
+		return formatMap(value)
+	case map[string]float32:
+		return formatMap(value)
+	case map[string]float64:
+		return formatMap(value)
+	case map[string]int:
+		return formatMap(value)
+	case map[string]string:
+		return formatMap(value)
 	case map[string]interface{}:
-		var s strings.Builder
-		for _, key := range getSortedKeys(value) {
-			if s.Len() != 0 {
-				s.WriteString(", ")
-			}
-			s.WriteString(fmt.Sprintf("%s: %s", formatValue(key), formatValue(value[key])))
-		}
-		return "{" + s.String() + "}"
+		return formatMap(value)
 	case []interface{}:
 		var s strings.Builder
 		for i, item := range value {
@@ -117,6 +124,17 @@ func formatValue(v interface{}) string {
 	}
 }
 
+func formatMap[V any](value map[string]V) string {
+	var s strings.Builder
+	for _, key := range getSortedKeys(value) {
+		if s.Len() != 0 {
+			s.WriteString(", ")
+		}
+		s.WriteString(fmt.Sprintf("%s: %s", formatValue(key), formatValue(value[key])))
+	}
+	return "{" + s.String() + "}"
+}
+
 var kclKeywords = map[string]struct{}{
 	"True":      {},
 	"False":     {},
diff --git a/pkg/tools/gen/templates/kcl/data.gotmpl b/pkg/tools/gen/templates/kcl/data.gotmpl
index ece47777..41aeb83a 100644
--- a/pkg/tools/gen/templates/kcl/data.gotmpl
+++ b/pkg/tools/gen/templates/kcl/data.gotmpl
@@ -1,10 +1,11 @@
 {{ formatName .Key }}{{ " = " }}
-    {{- if isKclData .Value }}
+    {{- if isKclConfig .Value }}{{ template "config" .Value -}}
+    {{- else if isKclData .Value }}
         {{- "{\n" }}
             {{- range .Value -}}
             {{- indentLines (include "data" .) "    " }}
             {{- end }}
-        {{- "}" }}
+        {{- "}\n" }}
     {{- else if isArray .Value }}
         {{- "[\n" }}
             {{- range .Value -}}
@@ -18,7 +19,7 @@
                     {{- indentLines (formatValue .) "    " }}{{- "\n" }}
                 {{- end }}
             {{- end }}
-        {{- "]" }}
+        {{- "]\n" }}
     {{- else }}
-    	{{- formatValue .Value }}
-    {{- end }}
+    	{{- formatValue .Value }}{{- "\n" }}
+    {{- end }}
\ No newline at end of file