I want to updated a liked SheetsChart for Google Slides. It works instantly when the slide is in edit mode, doesn't refresh the chart with latest data from Google Sheets when it's in "Slideshow" mode.

How can I refresh a Sheets Chart while in "Slideshow" mode?

Code

curl --request POST \
  '/[presentationId]:batchUpdate?key=[YOUR_API_KEY]' \
  --header 'Authorization: Bearer [YOUR_ACCESS_TOKEN]' \
  --header 'Accept: application/json' \
  --header 'Content-Type: application/json' \
  --data '{"requests":[{"refreshSheetsChart":{"objectId":"object Id that include a linked Sheets Chart"}}]}' \
  --compressed
Output
HTTP 200
{
  "presentationId": "presentationId",
  "replies": [
    {}
  ],
  "writeControl": {
    "requiredRevisionId": "<>"
  }
}

My use case is to update the Slide's SheetsChart in real-time with an external data source: When an external data source is updated -> use Google API to update Google Sheets and trigger to refresh linked SheetsChart in Slides.

When Slides in "edit" mode: it updates the linked chart instantly When Slides in "Slideshow" mode (or in presentation): it doesn't update the linked chart, exiting the "Slideshow" mode, the chart is updated. Is there an alternative way?