Weld Symbols: System A and B according to EN 2553

Good morning to everybody,

I have a question about the welding symbols in CREO according to EN 2553. In the picture I've attached you can see a very simple model with its fillet bead. The welding annotation shows a dashed line below the reference line: I've had a look at the aforementioned standard and the dashed line belongs to the system "A" while the same symbol without it is called system "B" (see the second picture). As far as I saw, CREO works according to the system "A" if I want an "ISO" annotation: is there a way to switch to system "B"?

Thanks a lot.

Have a nice day.