I am attempting to create a line graph with an inverted y-axis. The y-axis I was hoping to create would have a maximum value of 1 (top) and a minimum axis value of 20 (bottom). I have not been able to find how to perform this operation in jasper report, how can I do it? I just make negative numbers, but that´s not the way I want to do it 2 at top, 20 at bottom (not negatives)