Custom Depth does not work on Foliage Actors

Issue:

Currently, there is no parameter to allow users to render custom depth on foliage actors.

Request:

Set parameter to allow users to choose to render custom depth on foliage actors.

URL: https://answers.unrealengine.com/questions/139643/i-there-a-way-to-allow-a-custom-depth-to-foliage-i.html

Open Foliage tool
Add a staticmesh
Note that there is no way to enable custom depth
Paint foliage
Change to Custom Depth visualization mode in the editor viewport and note the foliage does not appear in the Custom Depth pass.

I there a way to allow a custom depth to foliage in unreal 4