CSP WebApp - IIS

Hi,

How do I create CSP page in IIS to be loaded from the class? 

Im able to open my index.html but I have class webapp.init.cls which extends %CSP.Page which should generate html. If I write localhost/myapp/webapp.init.cls I just got an error Invalid action.

In IIS Handler Mappings I did setup for *.cls and *.csp files. 

I followed this

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

When I created index.csp my IIS just return NOT FOUND. With the old APACHE server I had no issue with all, but Im trying to migrate to IIS.