vCAC Action with vCAC VM an vCenter VM elements

Hello together,

I’m trying to create a vCO Workflow as vCAC Externsion (IaaS Action) that works with vCAC VM and the vCenter VM.

I need the vCenter VM, OK that’s easy.

But I need also the vCAC VM to read and change Propertys. That’s really frustrating at the moment.
Has already done something like this?

I tried to get the vCAC:Entity from the UUID:

var virtualMachineId = vCenterVM.config.uuid;
var vCACEntity = System.getModule("com.vmware.library.vcac").getVirtualMachineEntityFromId(host,virtualMachineId);
var BackupClass = vCACEntity.getProperty("Custom.Backup.Class”);

But the vCACEntity is null.

Search by displayName n vCAC are nor really reliable for me in the Tests.

Kind Regards,

Markus