Graphing Frequency, Zero Value doesn't show up....

x	A	B
1	0	20
2	1	30
3	2	40

Hi, I try to insert a 2-D clustered column the graph x-axis appear to be (1,20), (2,30), (3,40)

How can I change (1-20) into (0-20) in the clustered graph?

i think i get it,