Cheat Engine

[adaptusaaf]

this code in a game:
esi+00000138

stores the values for how many guns your character has,
if i click 'find out what addresses this esi+00000138 instruction accesses',
it will access 0 addresses if I have 0 guns on my character
it will access 1 address if I have 1 gun on my character
it will access 2 addresses if I have 2 guns on my character
and so on

if I have 1 gun, the first address will have a value of '0'
if I have 10 guns, the 10 addresses will be in order: 0,1,2,3,4,5,6,7,8,9

what I'm trying to do is force my character to have 10 guns while only actually using one gun. I don't understand how can I make the esi+00000138 access 9 more addresses of my choosing? The address itself is not important, only that the addresses have the correct values such as 0,1,2,3,4,5,6,7,8,9 and then my character will fire 10 guns instead of 1.

Thank you for your help, I've never understood these register things.