Hi Murugappan ...
Version 6 has been difficult to work into Joomla because of the rearchitecture of Reportico to move to composer and the difficulty in getting this version to work well with Joomla.
However i know Joomla has moved on and there may be more compatibility. If i could find a solid day to try this out it might actually produce a solution. If i did would you be willing to test it in your environment?