Hello Sudipto, 
  
I understand that the interactive labels apply to the list that is on the right side of the chart. 
On the 2 images you provided there are CATEGORIES Cat1, Cat2, Cat3, etc... 
Is it possible to click on these Cat# and then navigate to a url or open another chart? 
  
this is the very feature we need to buy fusion charts! 
  
thankyou very much