How to pass number from angular to web api when action post asp.net c

Question

I work on asp.net core 3.1 web api  server side 

 

and angular 7 client side 

 

I work on page make upload to single file and it is ok working but when try to pass Number flag with file uploaded 

 

I face issue I can't pass value of variable selectedOwnerLevel  from angular 7 to web api

selectedOwnerLevel: number = 1; 

 

suppose selectedOwnerLevel is have value 1

 

so How to pass value 1 to web api  

 

on angular 7 client side

public uploadFile = (files,selectowner) => {

  const formData = new FormData();

  formData.append('file', this.fileToUpload,this.fileToUpload.name);

 console.log(this.selectedOwnerLevel);  // it have here 5
 if(this.selectedOwnerLevel==1)
 {
 this.http.post('http://localhost:61265/api/DeliverySys/', formData,{ responseType: 'blob' })
    .subscribe((response: Blob) => saveAs(response, this.fileToUpload.name + '.xlsx'));
 }

}

on html :

<div class="form-group">
     <label for="file">Choose File</label>
     <input type="file"
            id="file"
            (change)="handleFileInput($event.target.files)">
            <button type="button" class="btn btn-success" (click)="uploadFile(files,this.selectedOwnerLevel)">Upload File</button>
 </div>

 

on server side web api

[HttpPost, DisableRequestSizeLimit]
        public IActionResult Upload(int selectedOwnerLevel)
        {
            try
            {
                var DisplayFileName = Request.Form.Files[0];
                string fileName = DisplayFileName.FileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";

            }
            catch (Exception ex)
            {
                return StatusCode(500, $"Internal server error: {ex}");
            }

 when debug value of selectedOwnerLevel it display as 0 

 

so please How to display as actual value 1 on angular 7 ?

when do consol.log (this.selectedOwnerLevel) it give me 1 on image below 

but it display 0 

so How to solve issue please ? 

 

 

 

thanks