How to hack plant vs zombie zen garden

How to hack zen garden using cheat engine:

1.open plants vs zombie 

2.open cheat engine

3.select process popcapgame1.exe

4.scan 10_ _(zen garden value like  fertilizer)

5.decrease value, put the new value and click next scan

6.repeat until u get one address

7.click to the address and press enter

8.change the value that you want...

9.enjoy

Example: 1020(if u have 20 bug spray)

              1004(if u have 4 bug spray)