Windows 10 PowerShell setting up split tueling

(my first question, sorry if I haven't followed the protocol exactly)

I am trying to enable split tueling on my laptop (Windows 10), I leaed one has to use PowerShell to do it in Windows 10:

Windows 10 split tueling

But whey I type that command:

set-vpncoection office -splittueling $True

I get an error message:

A parameter caot be found that matches parameter name 'vpncoection'.

Could someone help please?

Thanks

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