I would try it using tcl:

for {set X 1} {$X < 20} {incr X} {
exec ./milight B $X
after 2000
}

I used a similar script for a 'scanner' app to determine the code for the new selflearning 'klik-aan-klik-uit' devices, but the device did not recognize the codes.

I am using this to control the inside- and outside lighting based on the sunset time. Backgarden light turns off earlier than the frontporge light. Internal lighting is based on sunset, added with a random time within half an hour. Works great.