Yes it should have, but your script does nothing different to mine.
You MUST have ran the task another time, to get that folder date in index 1.
Anyway, action to be taken as previous post. Let the profile do its business. Do not interfere with the profile and task by running it manually all the time.
Please note if you press play on the task twice in one day, even if it does not backup, the index files will change so you must avoid doing this.
- Action > Delete all index files and folders in /clockworkmod/backup
- Take one backup using the task
Then you will be starting fresh.