The theme got lost with my inability to add UI-Buttons. My plan was to have equations (simple one) like 3+4=? and then 3 options 6 | 7 | 8. And with getting the 'true' solution you would have controlled thrust up and with 'false' one thrust down. So you would have been even been forced to answer intentionally wrong to lower height.... I spent 2.5h(!) just for trying to add those Buttons. Still don't get it....then I decided to submit without the main-mechanic.... 🤨