Creating an external url link

[amirsguard-tapestry]

 Hi,

I am trying to create a link (external) to a page, let say I have page called 
ViewTask.html, I know to access this page I need a url like:

http://localhost:8080/example/service=page&page=ViewTask

But if ViewTask.java has a taskId member, how do you call the page and set this 
required field?

Thanks in advance,
Amir