BIRT- set the Bar-width of a Bar chart dynamically
I'm working on a report using BIRT. In my report I have a Bar chart and I'm trying to adjust it's Bar-width so that all Bars will have a width value that is retrieved from my dataset. I have managed to get the with-value named (steps) stored in a parameter but i don't know where i should use it. I've looked in the Internet and found the method setSeriesThickness() but no idea if it's what i should use.
Please see the following pic to understand i I'm trying to do.
Would appreciate your help
Thanks in advance