do you know how to fill this fields? it says transformation function. can i write just field names ? https://cdn.discordapp.com/attachments/1206131794261315594/1544045610989125692/image.png?ex=6a971408&is=6a95c288&hm=6acf7e4d36c3c3dc9ef706029037bca74d446a8d6c0fcea9fdecfe0fe65be5bb&