Action_space with different dimensions at each step

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Hi! I have an observation_space of variable length (ray.rllib.utils.spaces.repeated.Repeated) and I want to create an action_space with also a variable length that adopts in each step the length of the observation space. That is, in step 1, the action_space can generate [1,0,1] and in the next step, as the new observation_space has length 5, the action_space will generate [1,0,1,1,0]. Is this possible?