How to get vRA VMs name where a specific custom property name does not exists

Hi all

I would like to search the VMs whose haven't a specific custom property defined on it.

Anyone have a idea to do that in only one Odata query ? (to avoid looking 4000 Vms one by one)

I found this link to find the Vms by custom property name and value (https://automate-it.today/vro-code-finding-virtualmachines-custom-property/)

But in my case, it's a little bit different, because  i want to get VM name if a custom property not exist.

Thanks for your help

Jacques