Value To intensity – Blinking/Flashing LEDs

Hi Folks,
Im using a Yaeltex controller – in the set up of the device it is possible to select an option in the controller feedback called ‘Value to Intensity’. Basically the velocity value sent to the pad will dictate the brightness.

I am try to create a blinking/flashing pad – does anyone have any pointers for things I might be able to do in CSS to send velocity values to the pad to make it flashing. Something Like an on off function or even better a string on values modulation by step from 0-127 in a sine wave sort of pattern?