How to limite read rights outside the custom scope for custom RBAC role ?

Hello, 

With the Cmdlet below, I created a custom scope for a custom RBAC role.

New-ManagementScope -Name "MyCustomScope" -RecipientRestrictionFilter {Myfiltre}

Here my filtre = "specifics users"

I created a custom scope so that users can write and read on that (and only) custom scope but I don't want them to be able to read outside this scope.  

In other words, how to limit the read right on a specific scope? 

When I created the role group limited to MyCustomscope with specific users, they still have the possibility to read outside the scope. The Get-User cmdlet still work outside the user's limited scope.

New-RoleGroup -Name "MyCustomRole" -Roles -Members USERGRPOUP -CustomRecipientWriteScope "MyCustomScope" 

How can i limite this? is there any "CustomRecipientReadScope" parameter ?

Thank you. 

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