Naming every block that is a certain material script isn't working?

I'm putting this script into the command bar of studio

for _, object in pairs(game.Workspace.Model:GetChildren()) do

if object.Material == "Marble" then

object.Name = "Hi"

end

end

I'm trying to make every single block in Workspace thats material is Marble be named "Hi" - Why isn't this working? No errors.

Enums

So, if you were were to create a new part, set its material to "Plastic", and run this line of code in a script inside the part:

print(script.Parent.Material == 'Plastic')

This would print false, as the material of the part is an Enumeration (enum) value not equal to the string "Plastic"

With that said, the following line would print "true"

print(script.Parent.Material == Enum.Material.Plastic)

So, a fixed version of your script would be something like:

for _, object in pairs(game.Workspace.Model:GetChildren()) do
	if object.Material == Enum.Material.Marble then
		object.Name = "Hi"
	end
end