AOB scan help

Can you please help me and explain what i am doing wrong. I am able to find new updated codes to work but unfortunately i cant get the AOB SCAN code to work. regardless of what codes i use i get the error

Update -
i found the new code for 1 hit kill
When i change the corresponding hex value to 0
The result is instead of making it 1 hit kill
It makes it infinity hit kill

Can anyone help to explain how i can change this to get the right outcome? Thanks

I found this
scan 02 7B ?? ?? ?? ?? 7B ?? ?? ?? ?? 28 ?? ?? ?? ?? 16 6B 3D 2D 00 00 00
and change it to 02 7B ?? ?? ?? ?? 7B ?? ?? ?? ?? 28 ?? ?? ?? ?? 16 6B 3D 00 00 00 00

So i searched for

02 7B ?? ?? ?? ?? 7B ?? ?? ?? ?? 28 ?? ?? ?? ?? 16 6B 3D


Realised the code is changed to
02 7B ?? ?? ?? ?? 7B ?? ?? ?? ?? 28 ?? ?? ?? ?? 16 6B 3D 1D 00 00 00
So i changed the code to
02 7B ?? ?? ?? ?? 7B ?? ?? ?? ?? 28 ?? ?? ?? ?? 16 6B 3D 00 00 00 00

the result i got was making the zombies invunerable to damage

How can i fix this please?