Pass values to parameters through URL in Webdynpro and read them

Hi,

Request for help on ABAP WEBDYNPRO URL with Parameter values.

My requirement is:

An email would be sent to the recipients with an unique URL. This URL contains carries certain parameter values.

Clicking on this URL must open my webdynpro application. I need to read the parameter values from this URL and tweak my logic accordingly inside the code.

Could anybody please let me know, :

1. How to set up parameters in webdynpro applications to capture the parameters from the link. Say for example, the URL contains MATNR and MJAHR, in order to read these values, how should the set up be on the webdynpro application.

2. How to read these values and apply the logic in the method HANDLEDEFAULT.

3. Since the URL also has to be created how do i additionally add the parameter to the webdynpro application URL.

Thanks,

Deepak.