4-point rating scale

hi, I am TOTALLY new at psychopy, working on my first experiment, using the bulider mode.
I tried to implement a 4-point rating scale. everything works perfectly, but as soon as I try to customize (e.g. changing the button text by “acceptPreText=“Bitte Antwort wählen””) the scale, the whole scale changes into a 7-point scale. how can I avoid this?

thank you so much for your help!!