diff --git a/examples/dict/main.go b/examples/dict/main.go
index bc47d85..dbd86b9 100644
--- a/examples/dict/main.go
+++ b/examples/dict/main.go
@@ -26,9 +26,9 @@ func dictZh() {
 	defer searcher.Close()
 
 	// 将文档加入索引，docId 从1开始
-	searcher.Index(1, text)
-	searcher.Index(2, text1)
-	searcher.Index(3, text2)
+	searcher.Index("1", text)
+	searcher.Index("2", text1)
+	searcher.Index("3", text2)
 
 	// 等待索引刷新完毕
 	searcher.Flush()
@@ -51,9 +51,9 @@ func dictJp() {
 	text3 := "こんにちは世界"
 
 	// 将文档加入索引，docId 从1开始
-	searcher2.Index(1, text)
-	searcher2.Index(2, text1)
-	searcher2.Index(3, types.DocData{Content: text3})
+	searcher2.Index("1", text)
+	searcher2.Index("2", text1)
+	searcher2.Index("3", types.DocData{Content: text3})
 
 	// 等待索引刷新完毕
 	searcher2.Flush()
diff --git a/examples/dict2/main.go b/examples/dict2/main.go
index 6e5aa32..92e6b96 100644
--- a/examples/dict2/main.go
+++ b/examples/dict2/main.go
@@ -29,10 +29,10 @@ func searchWithGseFn1(seg gse.Segmenter) {
 
 	log.Println("searcher----------------...")
 
-	searcher.Index(1, data)
-	searcher.Index(2, data1)
-	searcher.Index(4, data1)
-	searcher.Index(3, data2)
+	searcher.Index("1", data)
+	searcher.Index("2", data1)
+	searcher.Index("4", data1)
+	searcher.Index("3", data2)
 	searcher.Flush()
 
 	search := searcher.Search(req)
@@ -45,10 +45,10 @@ func searchWithGse2(seg gse.Segmenter) {
 			Using: 1,
 		})
 
-	searcher1.Index(1, data)
-	searcher1.Index(2, data1)
-	searcher1.Index(4, data1)
-	searcher1.Index(3, data2)
+	searcher1.Index("1", data)
+	searcher1.Index("2", data1)
+	searcher1.Index("4", data1)
+	searcher1.Index("3", data2)
 	searcher1.Flush()
 
 	search1 := searcher1.Search(req)