How to obtain Vdc Storage Profile Allocated and Used from vCloud plugin 5.1

¿How can I get the Allocated and Used storage for a Vdc in vCloud 5.1 plugin?

In vCloud plugin 1.5, there was a property of VclVdc.storageCapacity give us the space Allocated, Limit, Used and Overhead.

In vCloud plugin 5.1 there is VclVdc.storageCapacity allways in null. Then VclVdc.getStorageProfiles() but in this objects, there is only the "limit" value.

¿Where are the other values?

I've attached two screenshots. vCloud console shows the data, but vCloud plugin don't.

Thanks a lot.

Damián