labalast

I built an Eventorbot type DIY printer. The extruder is mounted on the X axis which moves back and forth from right to left. The bed moves up and down, with Zmax on the top of the printer. Due to this geometry I have to start printing from top (Zmax) to bottom(Z0). I have seen examples of slicing with Cura, which slices incrementing the height from layer 0 up. I would like to know how to use Cura to slice decrementing the Z height from Zmax to Z0, at equal layers of 0.2 mm.Any help will be appreciated.