class and instance fail

gistfile1.rb

class Hello
	@properties = {}

	def self.attr_accessor name, type, default_value
		super name
		@properties[name] = type
		send name.to_s + '=', default_value
	end

	attr_accessor :allow_nether, :boolean, true
end

# test would pass if 'send name.to_s + '=', default_value' was commented out

	test 'define meta model' do
		@props.allow_nether = false
		assert_equal false, @props.allow_nether
	end

# but you get
# NoMethodError: undefined method `allow_nether=' for MinecraftServerProperties:Class