C# - Making a Hole in a GameObject

Unity Engine
1

Hi,I’ve made a simple Level Editor to my Game.
Now i Want to add a option to make a hole in some GameObject.
This hole will have a shape like selected before.
Is there any simple way to do this ? (Making a hole in GameObject at Runtime)

2

You have to reconstruct the mesh. It is possible but not trivial.
Check this out.