Mandatory custom checkbox(es) through Additional Javascript on a Landing Page

Hi there,

we use an Eloqua Landing Page (incl. Form) as our main webinar registration page. The webinar we are hosting consists of four individual sessions. On the Form Processing I created four separate Move to Program steps (four different Programs, one for each session), to be able to pass registration data to respective GoTo webinar sessions.
When I tried to set up the four sessions option with form elements Checkboxes or Radio Buttons I failed, because the logic apparently stops on the first matching session/program and does not evaluate further selected sessions.
I did the work around with 4x