ABC point cloud custom float attr. extend

[Bohusz]

Hello, We are currently working on building communication between Houdini and Tyflow. We have noticed that  alembic pointcloud works great. We already have all the basic attributes configured soo we can start having fun. But I have a question, is there a chance to extend the possibilities of alembic point cloud exporter to save custom floats in it? 

The second question is why TYcache is not exporting custom floats ?