How to set num_cpus in actor without annotation

Ray Core Ray Client
1

If I wrote:

@ray.remote(num_cpus=9)
class Counter(object):
    def __init__(self):
        self.value = 0
  
    def increment(self):
        self.value += 1
        return self.value
  
    def get_counter(self):
        return self.value

ray.init(address='ray://host:port', runtime_env=runtime_env)
counter_actor = Counter.remote()

It work fine. num_cpus works. But if I wrote in this way without annotation:

class Counter(object):
    def __init__(self):
        self.value = 0

    def increment(self):
        self.value += 1
        return self.value

    def get_counter(self):
        return self.value

ray.init(address='ray://host:port', runtime_env=runtime_env)
''' 
first method is wrong
'''
ray_factor = ray.remote(self.cls, num_cpus=9)
'''
second method is also wrong
'''
ray_factor = ray.remote(self.cls)
ray_factor.options(num_cpus=9)

counter_actor = Counter.remote()

how can i make num_cpus work without annotation.
My ray version is 1.10.0

2 
import ray

class Counter(object):
    def __init__(self):
        self.value = 0

    def increment(self):
        self.value += 1
        return self.value

    def get_counter(self):
        return self.value

ray.init()
counter_actor = ray.remote(Counter).options(num_cpus=4).remote()

Python’s decorator is just a syntax sugar and similar to Counter = ray.remote(Counter)