Custom Metrics of AWS to display how many newly uploaded files in the folders every day

Question

As title, is it a correct answer since I'm so sure whether we can put directory to a folder as the bucket name:

SELECT COUNT(NumberOfObjects) FROM SCHEMA("AWS/S3", BucketName,StorageType) 
WHERE BucketName = 'pbr-data-lake-dev/data/raw/A' AND BucketName = 'pbr-data-lake-dev/data/raw/B' AND BucketName = 'pbr-data-lake-dev/data/raw/C'
GROUP BY BucketName