You're right, sorry. The latest version requires a different syntax.
@Html.DayPilotCalendar("dpc1", ...)
@Html.DayPilotCalendar("dpc2", ...)
<script>
dpc1.nav.bottomRight.addEventListener("scroll", function() {
dpc2.nav.bottomRight.scrollTop = dpc1.nav.bottomRight.scrollTop;
});
dpc2.nav.bottomRight.addEventListener("scroll", function() {
dpc1.nav.bottomRight.scrollTop = dpc2.nav.bottomRight.scrollTop;
});
</script>
Please note that it uses an internal API that can change in the future.