The moment you asked to decrypt my script publicly is already suspicious. The method of switching ID is shared by NoFear, there's no reason to crack into my script to see how. I said scripting is hard, if you cant even understand how NoFear's manual hack work, there's no reason you can understand my code. You have my script, you can just use it, if want the method, go to NoFear's tutorial. That's all.
[added 4 minutes later]
If you want to develop one script, make a newly script by your own self instead of decrypt other's to "UPDATE". Just take Enyby's example, that's like grab others wallet and put your money in. Then that's all belongs to you. That is called replacing instead of develop.