is there any way to add the gravity spikes (DG-4) to the box? I've tried the hero_gravityspikes_melee and it won't work

Here's how I do it :
1) Copy the file : Call of Duty Black Ops III\share\raw\gamedata\weapons\zm\zm_levelcommon_weapons.csv
2) Paste it in there : Call of Duty Black Ops III\usermaps\zm_YOURMAP\gamedata\weapons\zm (folders gamedata, weapons and zm will need to be created)
3) Edit the file with Excel or any other. You can also edit other settings like if the cost.
If the datas are all in the first column, put this line with Notepad at the top of the file so Excel can read it correctly :

sep=,

4) Add the following line (at the end for example) into Call of Duty Black Ops III\usermaps\zm_YOURMAP\zone_source\zm_YOURMAP.zone :

stringtable,gamedata/weapons/zm/zm_levelcommon_weapons.csv

* You may need to remove the sep=, when you're done because the game doesn't like it I think.

You still don't need to move the file and still don't need excel

Open file

Find the "is in box" row

Change from false to true

Build mod - done

But if you edit directly the file in share, it will change it for all your custom maps no?
There is already a function after main() for custom weapons, I guess it's because it's the clean way to do it.
And for excel I said that because when you open it with Notepad it looks like garbage and it's hard to locate the right row.  Maybe there's another editor that lines up the rows correctly.

But if you edit directly the file in share, it will change it for all your custom maps no?
There is already a function after main() for custom weapons, I guess it's because it's the clean way to do it.
And for excel I said that because when you open it with Notepad it looks like garbage and it's hard to locate the right row.  Maybe there's another editor that lines up the rows correctly.

if there were a lot of rows I'd agree - there's 10...

And you can just copy paste the file "in the same" directory

If you want different csvs for different maps you just change "which one" you use in zm_usermap

I told you this before...