Web Dynpro Scoring model requirement in SAP Portfolio

Hi Friends,

I am new in Web Dynpro.

As per my requirement, need to update score model screen shown below.

As shown above, its normally getting updated for Net Present Value(manual) need to update,

IRR and IRR as marked.

It will get updated from below screen.

Please give some clue. How to start? or any standard SAP Note

For above requirment.

Thanks & Regards,

Sudarshan D