How to change starting Items for Dayz Server
Login to the Kinetic panel.
Stop the server

Go to the file manager

Open mpmissions.
Open the mission you currently have loaded.
Click on init.c
Locate line 84.
SetRandomHealth( itemEnt );This will adjust the starting health. Below paste.
player.GetInventory().CreateInInventory("id");Replace id with item id, List of item ids https://gist.github.com/agorushkin/135f75dc8c9fb4d49e264de5d888e4bb
Save the file

Start the server
