Hi again, @rafat
I have now gone through all the graphics on both SVG and traditional Graphics (JPG, PNG etc.).
The Graphic engine will truncate all labels longer than 27 chars in all the graphics. This make it much more flexibel to work with.
All the Graphics are now unified and will work as you want it to do.
Download the attached and replace it in /reporting/includes/class.graphic.inc and /includes/dashboard.inc folders.
You might try the reports Customer Aged.. and Supplier Aged (try the various graphic types). Also Balance Sheet and PL Sheet.
There was a reported bug under 'Report Bugs here'. Have a look here, there are 2 new files that should fix the issues here.
See ya Monday 
/Joe