Need help with updating script

I need help with an updating script - it first selects the table which to update and selects the data (that part works fine), then it's supposed to update the data in the table when send, but there is the problem: it doesn't do anything when I hit "Send", it just gives me a success message but nothing has been updated in the database.
See the script here:
http://pastebin.com/550950

Thnx in advance :)