I dont really approve of cheating and I have a legit save going on, but I think it would be fun too start a item hack save, however when i try it with

1. Pull out Cheat engine or another memory editor.
2. From the PROCESSES List, select 'java.exe' (Please note: If you have downloaded the standalone, select 'Minecraft.exe' from the list instead.)
3. In minecraft, make sure you have the first block in your UI as stone.
4. Scan for the exact value 1
5. Go to minecraft and change the first block in the UI to cobblestone.
6. Scan for the exact value 4
7. Go to minecraft and change the first block back to stone
8. Repeat step 4
9. This should yield one or two addresses. Pick one (or both) and
   change the value to one of the following material locations given
   underneath.

it doesnt work and I end up with no results using cheat engine, what am i doing wrong?