I have 2 charts keeping track of aquarium temperature and pH over time. I'm using MSArea.swf for the chart. The normal pH range falls between around 7.8 and 8.5. However, the Y axis of this chart only displays 7, 8 and 9. It would be very useful if I could have it display a line for every 2/10s instead of only every integer. How do I accomplish this?