diff --git a/gcli.go b/gcli.go
index ce8d528..282a067 100644
--- a/gcli.go
+++ b/gcli.go
@@ -17,6 +17,7 @@ import (
 	"strings"
 
 	"github.com/gookit/gcli/v3/gflag"
+	"github.com/gookit/goutil/cflag"
 	"github.com/gookit/goutil/envutil"
 )
 
@@ -243,16 +244,16 @@ func IsDebugMode() bool { return gOpts.Verbose >= VerbDebug }
  *************************************************************************/
 
 // Ints The int flag list, implemented flag.Value interface
-type Ints = gflag.Ints
+type Ints = cflag.Ints
 
 // Strings The string flag list, implemented flag.Value interface
-type Strings = gflag.Strings
+type Strings = cflag.Strings
 
 // Booleans The bool flag list, implemented flag.Value interface
-type Booleans = gflag.Booleans
+type Booleans = cflag.Booleans
 
 // EnumString The string flag list, implemented flag.Value interface
-type EnumString = gflag.EnumString
+type EnumString = cflag.EnumString
 
 // String type, a special string
 //
@@ -271,7 +272,7 @@ type EnumString = gflag.EnumString
 //
 //	--names "23,34,56"
 //	 names.Ints(",") -> []int{23,34,56}
-type String = gflag.String
+type String = cflag.String
 
 /*************************************************************************
  * Verbose level
diff --git a/gflag/ext_vars.go b/gflag/ext_vars.go
deleted file mode 100644
index 6a4c8f5..0000000
--- a/gflag/ext_vars.go
+++ /dev/null
@@ -1,135 +0,0 @@
-package gflag
-
-import (
-	"fmt"
-	"strconv"
-
-	"github.com/gookit/goutil/strutil"
-)
-
-/*************************************************************************
- * options: some special flag vars
- * - implemented flag.Value interface
- *************************************************************************/
-
-// Ints The int flag list, implemented flag.Value interface
-type Ints []int
-
-// String to string
-func (s *Ints) String() string {
-	return fmt.Sprintf("%v", *s)
-}
-
-// Set new value
-func (s *Ints) Set(value string) error {
-	intVal, err := strconv.Atoi(value)
-	if err == nil {
-		*s = append(*s, intVal)
-	}
-
-	return err
-}
-
-// Strings The string flag list, implemented flag.Value interface
-type Strings []string
-
-// String to string
-func (s *Strings) String() string {
-	return fmt.Sprintf("%v", *s)
-}
-
-// Set new value
-func (s *Strings) Set(value string) error {
-	*s = append(*s, value)
-	return nil
-}
-
-// Booleans The bool flag list, implemented flag.Value interface
-type Booleans []bool
-
-// String to string
-func (s *Booleans) String() string {
-	return fmt.Sprintf("%v", *s)
-}
-
-// Set new value
-func (s *Booleans) Set(value string) error {
-	boolVal, err := strconv.ParseBool(value)
-	if err == nil {
-		*s = append(*s, boolVal)
-	}
-
-	return err
-}
-
-// EnumString The string flag list, implemented flag.Value interface
-type EnumString struct {
-	val  string
-	enum []string
-}
-
-// String to string
-func (s *EnumString) String() string {
-	return s.val
-}
-
-// SetEnum values
-func (s *EnumString) SetEnum(enum []string) {
-	s.enum = enum
-}
-
-// Set new value, will check value is right
-func (s *EnumString) Set(value string) error {
-	var ok bool
-	for _, item := range s.enum {
-		if value == item {
-			ok = true
-			break
-		}
-	}
-
-	if !ok {
-		return fmt.Errorf("value must one of the: %v", s.enum)
-	}
-	return nil
-}
-
-// String a special string
-//
-// Usage:
-//
-//	// case 1:
-//	var names gcli.String
-//	c.VarOpt(&names, "names", "", "multi name by comma split")
-//
-//	--names "tom,john,joy"
-//	names.Split(",") -> []string{"tom","john","joy"}
-//
-//	// case 2:
-//	var ids gcli.String
-//	c.VarOpt(&ids, "ids", "", "multi id by comma split")
-//
-//	--names "23,34,56"
-//	names.Ints(",") -> []int{23,34,56}
-type String string
-
-// Set value
-func (s *String) Set(val string) error {
-	*s = String(val)
-	return nil
-}
-
-// String to string
-func (s *String) String() string {
-	return string(*s)
-}
-
-// Split value to []string
-func (s *String) Split(sep string) []string {
-	return strutil.ToStrings(string(*s), sep)
-}
-
-// Ints value to []int
-func (s *String) Ints(sep string) []int {
-	return strutil.Ints(string(*s), sep)
-}
diff --git a/gflag/gflag.go b/gflag/gflag.go
index 7d2ac02..d9ab155 100644
--- a/gflag/gflag.go
+++ b/gflag/gflag.go
@@ -2,6 +2,7 @@
 package gflag
 
 import (
+	"github.com/gookit/goutil/cflag"
 	"github.com/gookit/goutil/strutil"
 )
 
@@ -50,3 +51,15 @@ type OptCategory struct {
 	Name, Title string
 	OptNames    []string
 }
+
+// Ints The int flag list, implemented flag.Value interface
+type Ints = cflag.Ints
+
+// Strings The string flag list, implemented flag.Value interface
+type Strings = cflag.Strings
+
+// Booleans The bool flag list, implemented flag.Value interface
+type Booleans = cflag.Booleans
+
+// EnumString The string flag list, implemented flag.Value interface
+type EnumString = cflag.EnumString