Lua Script - Bracketing sequence

[photo360]

Hello everybody,

I would like to create a special exposure bracketing  sequence with Lua.

By default, the number of shoot per sequence is limited to 9. I need 14 shoots by 1EV step to cover a very high dynamic range.
Is it possible to do it by Lua Script?
I need also to take two times the same shoot (for a given TV value), one with flash and the second without flash.
The bracketing sequence should be like that:
  first shoot: tv: 1/200 with flash
  second shoot: tv: 1/200 without flash
  third shoot: tv: 1/100 with flash
  next shoot: tv: 1/100 without flash
  ...

thanks for you help