How to test the trained model in a new environment?

[ruffiann]

I have used the file https://github.com/rlworkgroup/garage/blob/08492007d6e2d9ead9beb83a8a4247e52019ac7d/metaworld_examples/sac_metaworld.py to train a model based on a push-v2 environment. I want to test the trained model in another push-v2 environment with some environment parameters changed (to test if it can generalize),. how should I do it?