Blueprint Customizing / How to display an empty field (spacing)?

Hello all,

I'd like to add an empty field in a field group to structure my layout.

I tried this: I added a "Textfield" with blank field name and flag "Without Labels" checked.

But I get a GETWA_NOT_ASSIGNED runtime error (Field symbol has not yet been assigned).

Does anybody have an idea?

Thanks in advance

Loic