Problems editing meeting policy with PowerShell

I am trying to edit a meeting policy with PowerShell. But I keep getting an error.

get-CsTeamsMeetingPolicy - identity "Tag:Stefan"

Identity : Tag:Stefan
...

Set-CsTeamsMeetingPolicy - Identity "Tag:Stefan" -RecordingStorageMode "OneDriveForBusiness"

or

Set-CsTeamsMeetingPolicy - Identity "Stefan" -RecordingStorageMode "OneDriveForBusiness"

Result

"TeamsMeetingPilicy" "Tag:Stefan" cannot be found because it is not present. 
Parameter name: Identity