RESTful API Field Array?

I basically have >200 multiple choice fields that will be used for check lists and I want to update the field choices in bulk rather than one by one. I can update them with the RESTful API and also with Postman, but I only know how to do one field at a time.

I will do one at a time if I have to, but I thought I would do some research and try to learn how to batch update field properties in the event that it is ever needed again. I can use IOL (I know injecting javascript is being deprecated) to update properties of multiple fields in one go, but I have not been able to figure out the correct syntax for the "choices".

Here is what works for a single field using the RESTful API:

{"properties": {
    "choices": [
      "OK",
      "NOK",
      "N/A"
    ]
  }​

Here is what works for a single field using Postman:

POST https://[QBREALM].com/db/[DBID] HTTP/1.0
Content-Type: application/xml
Content-Length:
QUICKBASE-ACTION: API_FieldAddChoices

<qdbapi>
   <udata>mydata</udata>
   <usertoken>usertoken</usertoken>
   <fid>8</fid>
   <choice>OK</choice>
   <choice>NOK</choice>
   <choice>N/A</choice>
</qdbapi>​

Here is the body (update.js) of the image on load that will successfully change the decimal places of multiple numeric fields on load:

var dbid = "<your dbid>";
var apptoken = "<your apptoken>";
var fids = [8, 9, 10];
var promise, promises = [];

$.ajaxSetup({data: {apptoken: apptoken}});

_.each(fids, function(fid) {
  promise = $.post(dbid, {
    act: "API_SetFieldProperties",
    fid: fid,
    decimal_places: "6"
  });
  promises.push(promise);
});

$.when(promises).then(function() {
  alert("DONE!!!");
});​

I have tried using the following with syntax no success:

choices: ["OK", "NOK", "N/A"]

choices: "OK", "NOK", "N/A"​

properties: {choices: ["OK", "NOK", "N/A"]}

properties: {choices: "OK", "NOK", "N/A"}

I have also tried swapping the API with API_FieldAddChoices to no avail. Any thoughts?

------------------------------
Adam Keever
------------------------------