need help on make a waterfall chart in qliksense similar with a chart in excel

[mmmm2016]

Hi guys

I want to make a waterfall chart in qliksense like this:

I made a demo chart with excel :

And now， I want to make a similar chart with "Forecast_Version" selection in qliksense.

I have tried for many days and have no ideas.

Could anyone help me on this?

Thank you in advance.