Cannot properly set RequestOptionsArgs of POST, in service

I use angular 6 and I was following along a video tutorial to submit images.

I would like to observe the progress of the form submission, so I can get the percentage of the uploaded file.

I have this in my component

this.http.post('http://localhost:3000/cms/upload',myFormData,{reportProgress:true,observe:'events'}).subscribe(
  event=>{
    console.log('event - ', event);       
});

This works fine and I get the event in console.log.

I try to "split" this now in two parts. Turn the post and its headers and its parameters to a function in my service, and just subscribe and get the results in the component. I try to do this:

myapp.component.ts

this.myService.uploadImage(form).subscribe(
  e=>{
    console.log('e- ',e);
  }
);

and in my service myapp.service.ts

  uploadImage(data) {
    let formData = new FormData(data);
    let headers = new Headers();    
    headers.append('Authorization',this.token);
    return this.http.post('http://localhost:3000/cms/upload',formData,{reportProgress:true, observe:'events', headers:headers});
  }

VScode says Argument of type {reportProgress:boolean;observe:string;headers:Headers} is not assingable to parameter of type RequestOptionsArgs

During compile I get Object literal may only specify known properties, and 'reportProgress' does not exist in type 'RequestOptionsArgs'. and when I try to use the form I get just the final response object back, with no event info in between.

So, how can I properly set my RequestOptionsArgs ?

Thanks

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