As I got to splitting big mesh into few smaller ones I can use few collision groups. But I am also using Invisible simple collision. How can I disable collision only on those high poly parts? I tried http://www.sidefx.com/docs/unreal/_attributes.html#AttributesGenericUproperty [www.sidefx.com] . I created unreal_uproperty_CollisionPresets Atribute String or Integer and it didnt work when I want diffrent collisions for each part of mesh. Same goes for unreal_generated_mesh_name. Is there is other way to do it?