Jokering help

I am working on jokering a couple of codes.
I have a question, maybe you can help me....

How do I find the on and off code?

Example:

#No Scope Recoil
0x004C889C 0x00000000

Let's say I am going to joker this code to >< (4000)
Where would I find the on and off code?

Is my question confusing or can someone help?

You mean the value of it when it is off? Just go into FTB2 and input that address in the decoder the value will be what it is when that is off because it shouldn't be on therefor it is off.

Thanks!