Foliage collision box problem

[M1K4L]

Hello, I made a tree from scratch in Blender, I've given it a collision box which works perfect on Unreal Engine when I place the trees 1 by 1, but when I drop them into foliage to mass place them, there's no collision box and the character can run straight through them, does anyone know the solution for this? I assumed they'd automatically keep their hit box when added to the foliage spreader... Thanks!

[fighter5347]

-Is your question about Unity or the UE4?
-which foliage tool do you use? -> foliage tool, landscape grass node or the procedural spawner?

[M1K4L]

Oops, keep getting the names muddled up as I've been trying both Unity and Unreal Engine, I've figured the problem out now, I had left the box to enable the collision box unchecked, should have looked for it before posting, thanks anyway!