public IHttpActionResult PutKPI(int id, KPI kPI)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != kPI.KPIID)
            {
                return BadRequest();
            }

            db.Entry(kPI).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!KPIExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.OK);
        }
        public IHttpActionResult PostKPI(KPI kPI)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }
            kPI.Estado = true;
            db.KPIs.Add(kPI);
            db.SaveChanges();

            return StatusCode(HttpStatusCode.OK);
        }