Its not modifying the heli's loot table.
"assets/prefabs/npc/patrol helicopter/heli_crate.prefab": {
"Enabled": true,
"ItemList": {
"ammo.rifle.explosive": {
"Max": 256,
"Min": 256
},
"ammo.rocket.basic": {
"Max": 25,
"Min": 5
},
"ammo.rocket.fire": {
"Max": 25,
"Min": 5
},
"ammo.rocket.hv": {
"Max": 25,
"Min": 5
},
"cctv.camera": {
"Max": 25,
"Min": 5
},
"explosive.timed": {
"Max": 15,
"Min": 5
},
"explosives": {
"Max": 300,
"Min": 1
},
"lmg.m249": {
"Max": 2,
"Min": 1
},
"metal.facemask": {
"Max": 1,
"Min": 1
},
"metal.plate.torso": {
"Max": 1,
"Min": 1
},
"rifle.ak": {
"Max": 5,
"Min": 1
},
"rifle.l96": {
"Max": 5,
"Min": 1
},
"rifle.lr300": {
"Max": 5,
"Min": 1
},
"targeting.computer": {
"Max": 25,
"Min": 5
},
"electric.generator.small": {
"Max": 5,
"Min": 1
}
},
"ItemsMax": 4,
"ItemsMin": 4,
"MaxBPs": 1,
"Scrap": 0
}