diff --git a/urlenc/build.go b/urlenc/build.go
index 2e049a7..257fa31 100644
--- a/urlenc/build.go
+++ b/urlenc/build.go
@@ -3,12 +3,12 @@ package urlenc
 import "strings"
 import "fmt"
 
-type Builder interface {
-	GetValuesURL() []string
-}
-
-type Value[V any] struct {
+type Pair[V any] struct {
 	Name string
+	Value V
+}
+func (a Pair[V]) String() string {
+	return fmt.Sprintf("%s=%v", a.Name, a.Value)
 }
 
 type Array[V any] struct {
@@ -27,3 +27,10 @@ func (a Array[V]) String() string {
 	return b.String()
 }
 
+func Join(values ...any) string {
+	vs := make([]string, len(values))
+	for i, v := range values {
+		vs[i] = fmt.Sprintf("%s", v)
+	}
+	return strings.Join(vs, "&")
+}
diff --git a/urlenc/build_test.go b/urlenc/build_test.go
index 67ac42b..d2cd85e 100644
--- a/urlenc/build_test.go
+++ b/urlenc/build_test.go
@@ -9,3 +9,15 @@ func TestArray(t *testing.T) {
 		Values: []int{123, 456, 789},
 	})
 }
+
+func TestJoin(t *testing.T) {
+	log.Printf(
+		Join(
+			Array[int]{
+				"id",
+				[]int{123, 456, 789},
+			},
+			Pair[int]{"somename", 25},
+		),
+	)
+}