How to Disable / Enable a VM's Network Adapter DirectPath I/O Parameter

Hi!

There are examples on the internet on how to get this setting, like

(Get-VM -Name "a-vm-name" | Get-NetworkAdapter).ExtensionData.UptCompatibilityEnabled

but there is none on how to set it. I know I could use Onyx but my vCenter has overtaken it (6.0 --> 6.5). Maybe I can get a quicker answer here...

Thanks

Gregor