in the create call endpoint, under analysis plan, how can I extract multiple (boolean) variables in the structured data schema? In the UI, I can specify different booleans (or other data types) to be extracted, but not sure how this work in the API https://cdn.discordapp.com/attachments/1211484481848873020/1293944166560170125/image.png?ex=670936e9&is=6707e569&hm=2e74f6ae3fc54ac335af91879592a6142b86fbfc95d06ed9359f9369bee15115& https://cdn.discordapp.com/attachments/1211484481848873020/1293944166874873986/image.png?ex=670936e9&is=6707e569&hm=8c9516546c342af98fd14c9f2616c71641f9fce50c688d21d28c1d0cea9f33b5&