How to define fields options in WixEventV2 cloneEvent()

I am unsucessfully trying to use the fields option in cloneEvent. The documentation suggests that there are predefine enum values, like DETAILS, that can be included in an array. I have tried many forms but always get a type mismatch error. code snippet below

const cloneOptions = {
  draft: true,
  event: {
    title: newTitle, 
    shortDescription: newSummary, 
    dateAndTimeSettings: {
      startDate: SD, 
      endDate: ED},
    detailedDescription: newDescription},
  fields: ["DETAILS", "TEXTS"]
   };
const clonedEvent = await wixEventsV2.cloneEvent(GLOBAL_TEMPLATE_WIX_EVENT_ID, cloneOptions);

Any help, greatly appreciated