Refactoring original FizzBuzz by making my own numbers as opposed to 1-100

FizzBuzz

def fizzbuzz1 
	#
	puts "Please put your range:"
	#number1 = gets.chomp.to_i
	first_num = gets.chomp.to_i
	last_num = gets.chomp.to_i
	n = (first_num..last_num)
	array = n.sort 
	
	array.each do |fixnum|
		if (fixnum % 3 == 0 && fixnum % 5 == 0)
			puts "FizzBuzz #{fixnum}"
		elsif (fixnum % 3 == 0 && fixnum != 15)
			puts "Fizz #{fixnum}"
		elsif (fixnum % 5 == 0 && fixnum != 15)
			puts "Buzz #{fixnum}"
		else puts fixnum
		end
		
	end

end
fizzbuzz1