Confused about num_feature_levels and use_feat_level

[sigma-alpha-beta]

In best_model_config.yaml num_feature_levels: 1 In config.py config.DECODER.use_feat_level = [0, 1, 2]

I am confused about that if use_feat_level = [0, 1, 2], should the num_feature_levels be equal to 3 ? thanks