Hi Raghuraman,
You probably didn’t saw my comment “However, till now I didn’t find any working example.».
Perhaps you can test the two examples «Sample Bar» and «SWOT Analysis» and confirm that they do or don’t work as expected?
Your link leads to the following page:
... in the next subchapter ... ->
... the tutorial is pointing to the "Sample Bar" extension example - but as I wrote: it does not work! At least not on my computer with my Lumira installation. And: If you follow the instruction of the tutorial, you will see, that it does not fit the explanation given in the tutorial … :-(
Regards.
Oliver