How to trigget Web Dynpro application from a hyperlink

Hi Experts,

For my project, I have created one HTML page. In the HTML, we are having following link:

https://www.myproject.com?12345

Here 12345 is the Request No and https://www.myproject.com is the URL of portal.

We have created one BAPI. The BAPI accepts 12345 as first parameter and https://www.myproject.com as second parameter.

After execution of BAPI, the backend returns one page.

Can you please let me know how I can achieve this? I want to know that on clicking on a HTML hyperlink,. how we can trigger one BAPI.

I also want to know that how we can pass 12345 and https://www.myproject.com from the HTML page to BAPI.

Thanks

Pradnya