Add extra (dynamic)series in Graph

Hi all,

I'm working in SAP BO Webi 4.0 and am walking against a hard brick wall. So maybe you guys can help me :-)

The following figure shows the data i'm geting as output from my query. Both tables are from the same query.

The left table has one extra column "Berp Grp".

Now I created the following graph. I added "ziektedag" on the x-axis, "AOGemiddelde" on y-axis.

The graph shows the lines for "Agrarisch" and "Bouwnijverheid".

My question: is it somehow possible to add an extra line that shows the set of data as shown in the right table?

Thanks in advance!

Joost van Poppel