Mobile - Android Phone HTC - Sms center - Solved

Due to lost sms incoming... my mobile company tells me to verify the Sms center number... but where is this option?
In Menu I can't found! I don't know if it works with all Android Phone or only some HTC Phone, but this is the trick:

digit in dialer

*#*#4636#*#*

Then appears something like a Menu, choose:

> info
> SMSC
> digit your Sms Center number
> update


I hope this can be helpful... ;)