how can i add custom loot like blueprints to a ceated box... i tried and all it gives is a blueprintbase item that is non usable

Have you tried using BetterLoot plugin ?

yes but how to add custom loot to only the custom box and not all the same type of boxes in the world

To modify the default loot box use this https://blmc.artemdanilkin.ru/ after that replace the loottable in oxide/data/betterloot. If its a custom box plugin i believe they have their own loottable you can modify usually in config files or data.

yes i use that for better loot but with custom loot spawns the loot config is like this

"Shortname": "blueprintbase",
"ID": -996920608,
"SkinID": 0,
"Amount": 1
}

when i put any type of blueprint in... it give me a blank blueprint that does nothing... what im trying to do is place hidden or hard to get to places that have boxes with only blueprints in them cause just using scrap to unlock everything takes to long when servers wipe every month

im sure that if a ID wasnt needed i could get it to work

"Shortname": "fireplace.stone.blueprint",
"ID": null,
"SkinID": 0,
"Amount": 1

i tried this but no luck