Multiple instances of same portlet on same page

Question

Dead horse, I know, but I am afraid I still don't get it:
I use ONE JSP to extract data as XML, parse the data using XSL, render it. A portlet has some variables that may vary between instances of the same portlet on the same page. I am familiar with this document: http://portalstudio.oracle.com/pls/ops/docs/FOLDER/COMMUNITY/PDK/ARTICLES/PRIMER.PORTLET.PARAMETERS.EVENTS.HTML
but still don't know how to make sure that every portlet gets it's 'own' parameters passed. I pass them and attempt to grap them in the jsp using request.getParameter().
I have played with making each parameter unique using the portlet instance name followed by a '.' and a name, e.g. 35024_LISTPORTLET_49519321.next_page=10.
Setting passAllUrlParams in provider.xml to true helps getting the parameters through, but the side effect is, of course, that all instances get mixed up. Setting it to false does nothing.
PLEASE, is there, somewhere, a document that tells us EXACTLY how to do this? JDev 10g, as10g.
Tnx.

Answer 1

Have you read the Public Portlet Parameters Support section of the Portal Developer's Guide?
The question is who passes the parameter to your portlets. If the parameters are passed from within the portlet instance itself, use qualified private portlet parameters. If they're passed from the outside, use page parameters and public portlet parameters.
Hope this helps.
Peter