I had to do some research to find out why my URLs did work. In short, the URL should point to http://localhost/ReportServer/ instead of http://localhost/Reports/, which is the Report Manager. Here is the post that helped:
http://dobrzanski.net/2008/08/11/reporting-services-problem-with-passing-parameters-directly-in-the-url/
Here is another good post about passing multivalued parameters:
http://bobp1339.blogspot.com/2007/10/passing-ssrs-report-parameters-in-url.html
Connecting Power BI Semantic Models To Data Sources Automatically With
Binding Hints
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Did you know that you can configure your Power BI semantic model so that it
automatically binds to a data source connection when you publish? To
illustrate...
2 days ago