How to set variable base_mir_obs ?

[formoree]

        base_mir_obs = [0.1, -1, 2, -3,              # root orient
                        -4, 5, -6,                   # root ang vel
                        13, -14, -15, 16, -17, 18,   # motor pos [1]
                         7,  -8,  -9, 10, -11, 12,   # motor pos [2]
                        25, -26, -27, 28, -29, 30,   # motor vel [1]
                        19, -20, -21, 22, -23, 24,   # motor vel [2]
        ]
        # 创建10个额外的观察索引
        append_obs = [(len(base_mir_obs)+i) for i in range(10)]
        self.robot.clock_inds = append_obs[0:2] # 时钟索引
        # 合并基础镜像观察和附加观察，创建完整的镜像观察列表
        self.robot.mirrored_obs = np.array(base_mir_obs + append_obs, copy=True).tolist()
        self.robot.mirrored_acts = [6, -7, -8, 9, -10, 11,
                                    0.1, -1, -2, 3, -4, 5,]

In jvrc_step.py file, i don't know how to set variables base_mir_obs and self.robot.mirrored_acts? I have read the comment,but I still don't know why.