How can I customize an extension ? Does everybody know any document which guide to customize the extension chart?

[#1]

Hi all !

Does everybody know the document which guide to customize the extension chart?

I was looking for an extension Waterfall chart for qliksense, and i saw this link http://branch.qlik.com/projects/showthread.php?362-it-Waterfall&highlight=waterfall

While I was using this chart, there were many problems:

+ I want to automatic reset between title of column and column, between column and title of dimension in bar

+ If I have a lot of column, how can i customize a scrollbar.

Many thanks in advance.

Regards,

Nam Nguyen