please make “Vertices” and “Triangles” variables public, set “XSize” to 3 “Ysize” to 4, hit play, click on the terrain and send a screenshot of “Vertices” and “Triangles” values from Details panel. Also i found your post by chance so next time you need any help i recommend you leaving a comment under the video or asking in our discord community, i’m usually very active there. Anyway thank you for following my tutorial! And sorry for not helping you with the previous issue, didn’t see that post unfortunately