What happends when you hex edit the items itself

I was playing with the hex edits and was trying to make it to where you can actually use the diamond items,
I loaded it up and I got this.I currently have one person (Etg311) agreed to help try to delete this script or what ever this contraption is.His idea was to analyze the files before the modded data and analyze the file after the modded data is added.

So meanwhile we'll be experimenting with this so stay updated.