Here is the formula behind that object : =Only (TOT_AMOUNT)
I wld lik that when this value is strictly less than 0 the background be RED, when is equal to zero the background color be YELLOW and when the value is strictly greater than 0 the background color be GREEN.
You find this in chart properties so left click on you chart. Formeln means expressions you select the one where you want to have the above 0 green and so on. oberhalb means above so you just put a zero in the textbox and then everything above will be green and unterhalb is underneath you also put a zero and then everything underneath zero will be red and for normal you change the backgroundcolor to yellow or whatever color you want to have. I hope it helps even though the screenshot is in german put im using qv in german. does that help you??