How do I use a subtractive geometry brush?

How can i use a subtractive geometry brush ?
I saw it in a tutorial but it doesn’t work.

Hi IBYM,

You should be able to use the information in this page to help you use BSP additive and subtractive: Geometry Brush Actors in Unreal Engine | Unreal Engine 5.1 Documentation

In essence, all you need to do use BSP additive/Subtractive is use them set the drop down for which method you need. As a note, the subtractive BSP volume will only work with other BSP brushes and will not work with static meshes.

I hope this helps.

Tim