I am not allowed to set header for x-appwrite-user-ud in postman

  const { clinicRef, patientRef }: CreateConsultationData = req.body;
  const databases = new Databases(client);
  const teams = new Teams(client);
  const functions = new Functions(client);

  const { "x-appwrite-user-id": creator }: RequestHeaders = req.headers;

  log(JSON.stringify(req.headers));

  if (!creator) {
    return res.send(
      JSON.stringify({
        message: "x-appwrite-user-id header is required",
      }),
      404,
      {
        "content-type": "application/json",
      }
    );
  }

  const { "x-appwrite-user-id": userId, "user-id": backup }: RequestHeaders =
    req.headers;
  const databases = new Databases(client);

  const authorId = userId || backup;

  if (!authorId) {
    return res.send(
      JSON.stringify({
        message: "either x-appwrite-user-id or user-id header is required",
      }),
      404,
      {
        "content-type": "application/json",
      }
    );
  }