Write API for refence field

Hi, how are you? I need some help with the write api. I’m currently migrating a blog to Builder, and one field (category) consists of a reference to a category model. How could I write that with the API? I know how to write a string, but a reference to an existing model?
thanks

Hi @emiliano thank you for your question, I have written a reply within your post from yesterday: Write Api a reference fields

Let’s continue the conversation there!