diff --git a/en/application-dev/file-management/medialibrary-filepath-guidelines.md b/en/application-dev/file-management/medialibrary-filepath-guidelines.md
index 4c7e2ecd4db6723a66930e624bd4b36b556330d1..1e310ef9312499bb131affb620ac7758e5033778 100644
--- a/en/application-dev/file-management/medialibrary-filepath-guidelines.md
+++ b/en/application-dev/file-management/medialibrary-filepath-guidelines.md
@@ -136,7 +136,7 @@ async function copySandbox2Public() {
     console.error('file asset get failed, message = ' + err);
   }
   let fdPub = await fileAsset.open('rw');
-  let fdSand = await fs.open(sandboxDirPath + 'testFile.txt', OpenMode.READ_WRITE);
+  let fdSand = await fs.open(sandboxDirPath + 'testFile.txt', fs.OpenMode.READ_WRITE);
   await fs.copyFile(fdSand.fd, fdPub);
   await fileAsset.close(fdPub);
   await fs.close(fdSand.fd);
@@ -174,7 +174,7 @@ async function example() {
   const context = getContext(this);
   let media = mediaLibrary.getMediaLibrary(context);
   const path = await media.getPublicDirectory(DIR_DOCUMENTS);
-  media.createAsset(mediaType, "testFile.text", path).then((asset) => {
+  media.createAsset(mediaType, "testFile.txt", path).then((asset) => {
     console.info("createAsset successfully:" + JSON.stringify(asset));
   }).catch((err) => {
     console.error("createAsset failed with error: " + err);
diff --git a/en/application-dev/file-management/medialibrary-resource-guidelines.md b/en/application-dev/file-management/medialibrary-resource-guidelines.md
index 7d120ec9a4fa9fd38ba92be97ee7fdd5a6f33816..054591847ffa156f5ee85cf5e2412b215750e283 100644
--- a/en/application-dev/file-management/medialibrary-resource-guidelines.md
+++ b/en/application-dev/file-management/medialibrary-resource-guidelines.md
@@ -42,14 +42,11 @@ async function example() {
   const context = getContext(this);
   let media = mediaLibrary.getMediaLibrary(context);
   const fetchFileResult = await media.getFileAssets(option);
-  fetchFileResult.getFirstObject().then((fileAsset) => {
+  fetchFileResult.getFirstObject().then(async (fileAsset) => {
     console.log('getFirstObject.displayName : ' + fileAsset.displayName);
     for (let i = 1; i < fetchFileResult.getCount(); i++) {
-      fetchFileResult.getNextObject().then((fileAsset) => {
-        console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
-      }).catch((err) => {
-        console.error('Failed to get next object: ' + err);
-      });
+      let fileAsset = await fetchFileResult.getNextObject();
+      console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
     }
   }).catch((err) => {
     console.error('Failed to get first object: ' + err);
@@ -75,14 +72,11 @@ async function example() {
   const context = getContext(this);
   let media = mediaLibrary.getMediaLibrary(context);
   const fetchFileResult = await media.getFileAssets(option);
-  fetchFileResult.getFirstObject().then((fileAsset) => {
+  fetchFileResult.getFirstObject().then(async (fileAsset) => {
     console.info('getFirstObject.displayName : ' + fileAsset.displayName);
     for (let i = 1; i < fetchFileResult.getCount(); i++) {
-      fetchFileResult.getNextObject().then((fileAsset) => {
-        console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
-      }).catch((err) => {
-        console.error('Failed to get next object: ' + err);
-      });
+      let fileAsset = await fetchFileResult.getNextObject();
+      console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
     }
   }).catch((err) => {
     console.error('Failed to get first object: ' + err);
@@ -108,14 +102,11 @@ async function example() {
   const context = getContext(this);
   let media = mediaLibrary.getMediaLibrary(context);
   const fetchFileResult = await media.getFileAssets(option);
-  fetchFileResult.getFirstObject().then((fileAsset) => {
+  fetchFileResult.getFirstObject().then(async (fileAsset) => {
     console.info('getFirstObject.displayName : ' + fileAsset.displayName);
     for (let i = 1; i < fetchFileResult.getCount(); i++) {
-      fetchFileResult.getNextObject().then((fileAsset) => {
-        console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
-      }).catch((err) => {
-        console.error('Failed to get next object: ' + err);
-      });
+      let fileAsset = await fetchFileResult.getNextObject();
+      console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
     }
   }).catch((err) => {
     console.error('Failed to get first object: ' + err);