SL 2 - Pb to set radio box in a form

Hye,

With SL2, I have a problem to set 3 radio box in a form. A home slide have a question and a choice of 3 radio buttons to answer (for instance rb1, rb2, rb3), the validation button leads to another slide which contains au return button.

The display order of the radio buttons is rb1, rb2, rb3 but after selection of one of them, sending the answer, and returning to the home slide, the order of the radio buttons has changed ...

Have you a solution to fix this problem please?

Thanks!

Serge