How do I check if something is missing from a model?

I have a model which contains

Using FindFirstChild, you can check whether something with a specific name is inside the model.

local name = "EnterNameHere"
if model:FindFirstChild(name,true) then
	print(name .. " is inside the model.")
else
	print(name .. " is not inside the model")
end

The second argument is a bool value that determines whether only the first children of the model are checked when false, or if all descendants of the model are checked when true.

If you want to search by class, you can use FindFirstChildOfClass.

Otherwise, if you have the instance and you want to check if it’s inside, you can use

if thing:IsDescendantOf(model) then

to check.