Calculated dimension

[#1]

Hello

I have a table built like below

Price	Indic1	indic2
10	9	9
11	10	9
13	12	10

I would like to print on a bar chart thet number of record Indic and variance with the price

bascially to obtain something like that

Price variance	indic1	Indic2
1	3	1
2	0	2

To be included in stack barchart

I have the feeling that i need 2 dimensions (indic name and price variance) but the price variance is necessarily calculated for a given indic ...

Must be a classic issue but i could'nt find the solution in the forum

Many thanks in advance.

Lionel