Get pageviews via special part of the URL? (no replies)

Hey, i am searching for a solution to get the pageview of many Pages.

At first I found out that i can realise it via: Actions.getPageUrl&pageUrl=

This is my URL-structure:
http://www.mypage.com/var1/var2/var3/var4/8164/

Now my problem is, that var1 - var4 can change. Just the last ID is uniqu and will never change.
So if the url will change someday getPageUrl will reset my pageviews. Cause the URL that i will send to piwik is different.

Is there an option to send a request to piwik with just the uniqu ID? Or is there a other way to get the Pageviews from my Sites.


Thanx
Basti