Restrict Users from Creating New Teams in Microsoft Teams

Hello together,

I've do this here: https://learn.microsoft.com/en-us/previous-versions/microsoft-365/solutions/manage-creation-of-groups?view=o365-worldwide#step-2-run-powershell-commands

I create a group for users, that allowed to create new Teams Channels and run the script, but i didnt see in the updated settings the group ID:

What im doing wrong?

At the moment no one can create new Teams Channels, also the members of the GroupCreationAllowed Group. 

Can somebody help, whats the problem of the script is?

Thx
Peter