diff --git a/protocol/goai/goai.go b/protocol/goai/goai.go
index aef00be0e..e25d6e296 100644
--- a/protocol/goai/goai.go
+++ b/protocol/goai/goai.go
@@ -82,8 +82,8 @@ const (
 )
 
 const (
-	patternKeyForRequired = `required`
-	patternKeyForIn       = `in:`
+	validationRuleKeyForRequired = `required`
+	validationRuleKeyForIn       = `in:`
 )
 
 var (
diff --git a/protocol/goai/goai_parameter_ref.go b/protocol/goai/goai_parameter_ref.go
index 416ec7dcc..433956788 100644
--- a/protocol/goai/goai_parameter_ref.go
+++ b/protocol/goai/goai_parameter_ref.go
@@ -80,8 +80,9 @@ func (oai *OpenApiV3) newParameterRefWithStructMethod(field gstructs.Field, path
 	}
 
 	// Required check.
-	if parameter.Schema.Value != nil && parameter.Schema.Value.Pattern != "" {
-		if gset.NewStrSetFrom(gstr.Split(parameter.Schema.Value.Pattern, "|")).Contains(patternKeyForRequired) {
+	if parameter.Schema.Value != nil && parameter.Schema.Value.ValidationRules != "" {
+		validationRuleArray := gstr.Split(parameter.Schema.Value.ValidationRules, "|")
+		if gset.NewStrSetFrom(validationRuleArray).Contains(validationRuleKeyForRequired) {
 			parameter.Required = true
 		}
 	}
diff --git a/protocol/goai/goai_shema.go b/protocol/goai/goai_shema.go
index 5f96628f7..fa9819f6c 100644
--- a/protocol/goai/goai_shema.go
+++ b/protocol/goai/goai_shema.go
@@ -60,6 +60,7 @@ type Schema struct {
 	AdditionalProperties *SchemaRef     `json:"additionalProperties,omitempty"`
 	Discriminator        *Discriminator `json:"discriminator,omitempty"`
 	XExtensions          XExtensions    `json:"-"`
+	ValidationRules      string         `json:"-"`
 }
 
 func (s Schema) MarshalJSON() ([]byte, error) {
@@ -183,9 +184,9 @@ func (oai *OpenApiV3) structToSchema(object interface{}) (*Schema, error) {
 	}
 
 	schema.Properties.Iterator(func(key string, ref SchemaRef) bool {
-		if ref.Value != nil && ref.Value.Pattern != "" {
-			validationRuleSet := gset.NewStrSetFrom(gstr.Split(ref.Value.Pattern, "|"))
-			if validationRuleSet.Contains(patternKeyForRequired) {
+		if ref.Value != nil && ref.Value.ValidationRules != "" {
+			validationRuleSet := gset.NewStrSetFrom(gstr.Split(ref.Value.ValidationRules, "|"))
+			if validationRuleSet.Contains(validationRuleKeyForRequired) {
 				schema.Required = append(schema.Required, key)
 			}
 		}
@@ -212,14 +213,14 @@ func (oai *OpenApiV3) tagMapToSchema(tagMap map[string]string, schema *Schema) e
 	for _, tag := range gvalid.GetTags() {
 		if validationTagValue, ok := tagMap[tag]; ok {
 			_, validationRules, _ := gvalid.ParseTagValue(validationTagValue)
-			schema.Pattern = validationRules
+			schema.ValidationRules = validationRules
 			// Enum checks.
 			if len(schema.Enum) == 0 {
 				for _, rule := range gstr.SplitAndTrim(validationRules, "|") {
-					if gstr.HasPrefix(rule, patternKeyForIn) {
+					if gstr.HasPrefix(rule, validationRuleKeyForIn) {
 						var (
 							isAllEnumNumber = true
-							enumArray       = gstr.SplitAndTrim(rule[len(patternKeyForIn):], ",")
+							enumArray       = gstr.SplitAndTrim(rule[len(validationRuleKeyForIn):], ",")
 						)
 						for _, enum := range enumArray {
 							if !gstr.IsNumeric(enum) {
diff --git a/protocol/goai/goai_xextensions.go b/protocol/goai/goai_xextensions.go
index cc11ef6a6..1d2f2462e 100644
--- a/protocol/goai/goai_xextensions.go
+++ b/protocol/goai/goai_xextensions.go
@@ -11,7 +11,7 @@ import (
 )
 
 // XExtensions stores the `x-` custom extensions.
-type XExtensions map[string]interface{}
+type XExtensions map[string]string
 
 func (oai *OpenApiV3) tagMapToXExtensions(tagMap map[string]string, extensions XExtensions) {
 	for k, v := range tagMap {