I’m trying to figure out how to add a property that describes how many objects are in an S3 bucket. Please look at the following:

{
  "source": ["aws.s3"],
  "detail-type": ["Object Created"],
  "detail": {
    "bucket": {
      "name": ["bucketname"]
       **"property-that-describes-number-of-objects": 30**
    }
  }
}

I tried “object-count”: 30, but that generated an error since that property didn’t exist.