Can you control which way the steps move first in a step line chart? For example if I have two values

4/1/2010 => 10
4/2/2010 => 5

I've graphed the date along the X axis and the value along the Y axis. In the scenario above. The point for 4/1/2010 is drawn then the stop moves over then down. So it looks like 4/2/2010 really has a value of 10 as well. is there anyway to make the step drop down first then over?

Thank You in advance.