api use Similarity/Stability/Exaggeration possible?

When we use heygen manually we can configure Similarity/Stability/Exaggeration for a good voice and speed. Currently i am testing your api with the 100$ package and would like to use the configuration for my video/voice as same like i use it manually. I can not find in the documentation the confiration snippets. There are or you have another idea how i can adapt the same configruation of other videos to videos created by api?