accessing charts "additional properties" with code

Hi,

In 1.3, I defined a simple chart. In the additional properties, I checked the flag "Show Title" and entered an hard coded title. This is working fine.

Now I want to be able to change the title at runtime depending on the line selected in a grid. fro instance, I would like to have title like : "Chart for product XYZ".

when I ctrl-space on my object CHART1. there is set methods for all the standard properties but it doesn't seems to be possible to access the "additional" properties...

Is there a way to do this ?

Thanks !

Dany