function onTouched()
local model1 = game.ServerStorage."DeadArnold"
local model2 = workspace."Arnold"
model1.Parent = workspace."Arnold"
model2:Destroy()
end
in this case, it got DeadArnold. The script is supposed to remove "Arnold" and replace it with DeadArnold.

1 comment
In Lua, .something is the same as ["something"]. You're putting a string after the . and not text.