config doesnt save?

hello i recently bought a server and I am currently trying to turn Durability off. When I type conditionloss.armorhealthmult “0” & conditionloss.damagemultiplier “0” into the console it works… but once I leave the game, the settings go back to default.

Is there something i am doing wrong? I have tried typing “config.save” but that did not work either… I would really appreciate it if someone could help me get this sorted out. thank you!