I'm having some trouble passing a multivalued parameter through a URL.

http://DEFAULT REPORTSERVER/ReportViewer.aspx?
%2fReport1&parameter1=124&parameter2=(Select+All)

The first parameter will go in fine. And I have other reports where
both parameters will go in fine (if I have more than one). This
report, parameter 2 depends on parameter 1, but I want to pass ALL
possible values into parameter 2. I'm not sure if it will work or not
because of a dependency. In general though, I would like to know how
to pass ALL parameters as default through a URL and through a
subscription.

Thanks