diff --git a/typescript/audio2text/package.json b/typescript/audio2text/package.json
index 3c2206e..217a026 100644
--- a/typescript/audio2text/package.json
+++ b/typescript/audio2text/package.json
@@ -14,12 +14,13 @@
     "Transform"
   ],
   "repository": {
-    "type":"git",
-    "url":"https://github.com/scramjetorg/platform-samples/tree/main/typescript/audio2text"
+    "type": "git",
+    "url": "https://github.com/scramjetorg/platform-samples/tree/main/typescript/audio2text"
   },
   "author": "piotrek6641",
   "license": "ISC",
   "dependencies": {
+    "@scramjet/obj-logger": "^0.34.3",
     "@scramjet/utility": "^0.33.5",
     "axios": "^1.3.6",
     "date-and-time": "^2.4.3",
diff --git a/typescript/audio2text/src/index.ts b/typescript/audio2text/src/index.ts
index 3803c2b..eac0f0f 100644
--- a/typescript/audio2text/src/index.ts
+++ b/typescript/audio2text/src/index.ts
@@ -7,9 +7,12 @@ const app: ReadableApp<any> = async function(
     ) {
     const assembly = new Assembly(token);
 
-    await assembly.processFile();
+    assembly.logger.outputLogStream.pipe(this.logger.inputLogStream);
 
-    return Promise.resolve("finished");
+    return assembly.processFileFs().then(res => {
+        this.logger.info("Result", res);
+        return res;
+    });
 };
 
 export default app;
diff --git a/typescript/audio2text/src/utils/assembly.ts b/typescript/audio2text/src/utils/assembly.ts
index 91bc443..df2ebd5 100644
--- a/typescript/audio2text/src/utils/assembly.ts
+++ b/typescript/audio2text/src/utils/assembly.ts
@@ -3,39 +3,42 @@ import axios, { AxiosInstance } from "axios";
 import { defer } from "@scramjet/utility";
 import { readFile } from "fs";
 import path from "path";
+import { ObjLogger } from "@scramjet/obj-logger";
+import { Readable } from "stream";
 
 
 export class Assembly {
     //path to file change song.wav to name of your file
     //file has to be in a same directory
     file = path.join(__dirname, "song.wav");
-    fileUrl:string = "";
-    status:string = "";
-    transciptId:string = "";
-    token:string;
-    client:AxiosInstance;
+    logger = new ObjLogger("Assembly");
+    fileUrl: string = "";
+    transciptId: string = "";
+    client: AxiosInstance;
     constructor(token:string) {
-        this.token = token;
         this.client = axios.create({
             baseURL: "https://api.assemblyai.com/v2",
             headers: {
-                authorization: this.token, //conf.apiKey,
+                authorization: token,
                 "transfer-encoding": "chunked",
+                "content-type" : "application/octet-stream"
             },
         });
     }
-    private async upload(): Promise<string> {
+    private async uploadFromFs(): Promise<void> {
         return new Promise((resolve, reject) => {
             readFile(this.file, async (err, data) => {
                 if (err) reject(err);
-
                 await this.client
                     .post("/upload", data)
                     .then((res) => {
                         this.fileUrl = res.data.upload_url;
-                        resolve("succesfully uploaded");
+                        this.logger.info("succesfully uploaded");
+                        this.logger.info("upload URL", this.fileUrl);
+
+                        resolve()
                     })
-                    .catch((error) => console.error(error));
+                    .catch((error) => this.logger.error("got axios error:", error));
             });
         });
     }
@@ -46,30 +49,45 @@ export class Assembly {
             })
             .then((res) => { this.transciptId = res.data.id; });
     }
-    private async transcript():Promise<string> {
-        return new Promise(async (resolve, _reject) => {
-            while (this.status !== "completed") {
-                this.client
-                    .get(`/transcript/${this.transciptId}`)
-                    // eslint-disable-next-line no-loop-func
-                    .then((res) => {
-                        if (res.data.status === "completed") {
-                            resolve(res.data.text);
-                        } else {
-                            console.log(res.data.status + "...");
-                            this.status = res.data.status;
-                        }
-                    })
-                    .catch(console.error);
+    private async upload(inputStream: Readable): Promise<void> {
+        return this.client
+            .post("/upload", inputStream)
+            .then((res) => {
+                this.fileUrl = res.data.upload_url;
 
-                await defer(3000);
-            }
-        });
+                this.logger.info("succesfully uploaded");
+                this.logger.info("upload URL", this.fileUrl);
+            })
+            .catch((error) => this.logger.error(error));
+    }
+    private async transcript(): Promise<string> {
+        const result = await this.client
+            .get<{ status?: string, error?: string, text?: string }>(`/transcript/${this.transciptId}`)
+            .then((res) => {
+                if (res.data.status === "error") {
+                    this.logger.info("Got error from API", res.data.error);
+                }
+
+                return res.data;
+            });
+
+        if (result.status !== "completed") {
+            this.logger.info(result.status);
+            await defer(3000);
+            return this.transcript();
+        }
+
+        return result.text;
+    }
+    async processFileFs(): Promise<string> {
+        await this.uploadFromFs();
+        await this.startTranscript();
+        return this.transcript();
     }
-    async processFile():Promise<void> {
-        await this.upload();
+    async processFile(inputStream: Readable): Promise<string> {
+        await this.upload(inputStream);
         await this.startTranscript();
-        await this.transcript().then(console.log);
+        return this.transcript();
     }
 }