Wind Vector Arrow Won't Works

Hello everyone, I’m new to this tools called butterfly and im using this for my final exam. I’m trying to follow this tutorial on youtube, the first part is working but in the second part I have this problem where the wind vector doesn’t work like it used to. Does anyone know what kinda problems that i have right now? I’d be so happy if someone wants to help me figure this out, thank you

butterfly wind.gh (136.3 KB)