Debugging in Visual Studio 2017 (Enterprise Developer 3.0)

I recently installed Visual Studio 2017 and Microfocus Enterprise Developer 3.0.

When debugging our application, which is a managed application (mixture of C# and Cobol compiled for .NET), I can't see the values of Cobol data items. The error message I get is: error CS0103: The name 'AFD2' does not exist in the current context.

To be clear, the results of the run are 100% correct, so it's seems to be a debugging issue exclusively.

I suspect that I have a wrong setting somewhere.

Kind regards,

Mark de Vos