bar chart + display data question

Hi there,

I am working on a bar chart template to perform a side-by-side analysis. In such an analysis I show data (in this case 18 rows and 3 columns). The data is shown in regular worksheet rows. I now want to correspond the height of each of the 18 bars with the data in the worksheet rows.

I really don't know how to do this? Any help is much appreciated!

I will attach the file for illustration purposes.

thanks in advance!