Hi,
probably curve tables can be created from C++, found on this page Driving Gameplay with Data from Excel - Unreal Engine DRIVING GAMEPLAY WITH DATA FROM EXCEL and not so long ago saw few docs that can explain what, how and for these curve tables (don’t sure it’s actually curve, maybe just confusing name) Data Driven Gameplay Elements in Unreal Engine | Unreal Engine 5.1 Documentation A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
so if you still want make something and don’t know how, best ideas is describe how should look your final result or for what you need it and maybe there’s more simple way would be written to achieve same visual result
p.s. don’t forget mark question as answered when problem solved, so anyone else later can have same question and may find solution faster, if you find solution on your own, don’t forget write it too