You mean you want to add something new to Ignore, Overlap, Block? Some 4th state?
Or you want to add new collision channel, like WorldStatic, Pawn, and so on? Its not property, it can be added through editor - Edit - Project Settings - Collision
You mean you want to add something new to Ignore, Overlap, Block? Some 4th state?
Or you want to add new collision channel, like WorldStatic, Pawn, and so on? Its not property, it can be added through editor - Edit - Project Settings - Collision