Sorry, I've just noticed that you asked for dot separators not commas
Wouldn't this be defined by the regional settings? If the settings affect the format for money, this can result problematic.
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