want to make graph in crystal reports 8

Hi to All,

is there anyone who can guid me how to make a graph in crystal report 8 against 3 values.

as i have tried to make a graph but it offers only 2 values and 3rd value can not be shown.

For example columns are

1. Region name
2. Total capacity
3. Sold Capacity

I want to make a graph that should show total capacity and sold capacity.

when i make the graph crystal report offers me only 2 values i. e. the graph against 1st or 2nd value or 1st or 3rd value.

waiting for ur reply

thanks