Uploading recorded Media Object

Hi,

i successfully used Media in Ionic 5 to record the save the audio in temp (example : /private/var/mobile/Containers/Data/Application/B620255E-8F53-4163-BF67-DD32E646C0F7/tmp/tmpchat.m4a)

the problem is, i have nodejs api that built on multer and usually takes form-data and upload the files, how to upload that file /private/var/mobile/Containers/Data/Application/B620255E-8F53-4163-BF67-DD32E646C0F7/tmp/tmpchat.m4a

async recordAudio() {

    this.file.createFile(this.file.tempDirectory, 'tmpchat.m4a', true).then(() => {

      this.mic = 'mic'
      let file;
      
      if (this.platform.is('ios')) {  //ios
        file = this.media.create(this.file.tempDirectory.replace(/^file:\/\//, '') + 'tmpchat.m4a');
        
      } else {  // android
        file = this.media.create(this.file.tempDirectory + 'tmpchat.m4a');
      }

      file.startRecord();
      setTimeout(() => {
        file.stopRecord()

            this.uploadAudio(file, 1211);
            this.mic = 'mic-outline'

      }
        , 5000);
    });
  }
  async uploadAudio(file, messageId) {
    const loader = await this.ui.presentLoader();
    const url = 'https://meitstech.net:2223/uploadSupportAttachmentFile/'
    const Data = new FormData();
    
    Data.append('SESSION_ID', this.mysession);
    Data.append('MESSAGE_ID', messageId);
    Data.append('file', file);

    let headers = new HttpHeaders();
    headers.append('Content-Type', 'multipart/form-data');
    var http = new HttpClient(this.handler);
    const req = new HttpRequest('POST', url, Data, {
      headers: headers
    });

    http.request(req).subscribe((success: any) => {
      this.respondSupport = `<a href=\"${success.body.rows[0].URL}\" target="_blank">tmpchat.m4a</a>`;
      loader.dismiss();
      this.respondSupport = '';
    }, error => {
      console.log('myerror', error)
    });
  }