Report with Trend Views on multiple VMs

Hello,

i'm struggling with following problem:

I want to create a report with a few trend views (like CPU Usage of the last 24 Hours) on an group of VMs.

There are a configurated views with all the parameters i need and i put them in a custom report.

But i can run that report only on a VM Object and not on a folder or ressource pool.

is there a possibility to create a report with the trend cpu views of more than one vm? Can i create a group of VMs an run the report against that group?

Thanks in advance

Moritz