ACE can't do 3D, which is what you're drawing is. If you can draw it as a solid and export an .stl file, you could use FreeMill or MeshCAM to do it.
A tedious workaround would be to draw a series of parallel lines. put each line on it's own layer. Calculate the depth each line needs to be and set up each layer to the correct depth in ACE. All the lines should be drawn on the same plane, at the same Z level.