VC3.1 heightmap inverted?

Whenever I look at my height map and the print itself, it seems like the height map is inverted.. (or atleast the Z axis is). In this example, the heightmap shows the highest point at the left side [175.6, 304.9] and the lowest on the right. But when I'm printing it seems that the lowest spot is on the left and the highest on the right. Is there any way to fix this or am I just misinterpreting it all?