Please, review the code I sent as there are some errors I didn't see, mainly because I can't test the code. I hope you get the idea of what it's doing, so you can modify it and mantain it.
For the repeating new id, could you please post the code you used?
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2