Query vm.totalStorageSize not working

Good morning/afternoon SW Junkies,

I am having the following issue

both vm.totalStorageSize and vm.totalStorageSizetotal query do not work on my Virtualization Manager, zero bytes reported , for the dashboard (pre canned Storage Dashboard) or data export

I am running the latest product version / VApp

The domain account im using is the same for both Storage Manager and Virtualization manager, STM seems to be working fine

What level of permissions does this account need on Vcenter Server (5.5)

Thank you