Anyone know how the RHB Variable loan work when the OPR Up, example from 3 to 3.5%?

As RHB offered 2.05-2.07% for EV car and it also indicated lower than Fixed rate, which I can't think off how the calculation work
https://www.rhbgroup.com/ChargEV/index.html

BR + 0.10% p.a.
or 2.05% p.a. (Flat Rate equivalent)

* Not sure the officer try hidding something