Javascript – Django 'none' values from ajax

My views:

def deleteDepartement(request):

  object_id = request.POST.get('Id')
  name= request.POST.get('name')

  print(object_id)
  print(name)
  try:
    D=Department.objects.get(id=object_id)
    
  except:
    print("NOT FOUND")
    
  return redirect('department')

JavaScript code:

$.ajax({
  type: 'POST', 
  url: "{% url 'deleteDepartement' %}", 
  data: {
    csrfmiddlewaretoken: '{{ csrf_token }}',
    Id:objectId,
    name:'test',
  },
});   

I got none in value in django views. When I console.log I got the id, but when i try to sent it i got none. Any suggestions please?