Interface variable types map and set not implemented yet?

Development Programming & Scripting Blueprint
1

Hi,
is it possible that maps and sets are not fully implemented yet for example for interfaces?

I got this error messages:
Error Default value ‘’ for Value is invalid: ‘Map inputs (like ‘Value’) must have an input wired into them (try connecting a MakeMap node).’
Error Default value ‘’ for Value is invalid: ‘Set inputs (like ‘Value’) must have an input wired into them (try connecting a MakeSet node).’