Hurtworld Create items

Hello needs modification to the server that allows you to add new items.
I am an ordinary backpack with a capacity of 20 slots, I wanted to add dear Dr. backpack choose him another name eg. super backpack that held by 40 slots
commends
AddItem - create new item
/itemcreate <old id(copies appearance)> <new id(400+)> <name item>
AddRule - adds a new rule to the subject
/itemrule <id new(400+)> <new rule> <ammunition>
DelRule - adds a new rule to the subject
/itemruledel <id new(400+)> <name rule to delete>
EditItem -
/itemedit <id new(400+)> <name rule to change> <ammunition>
DeleteItem
/itemdel <id new(400+)>
eg.

Code:

Add item
/itemadd 88 401 Super Backpack
Add rule for item
/itemrule 401 Heal +100
/itemrule 401 Protection +50
/itemrule 401 Slot +40
Delete rule on item
/itemruledel 401 Slot +40
Edit rule
/itemedit 401 Slot +35
Delete item
/itemdel 401