Hello to everybody,
although it's been a long time since you discussed this issue, but for you and for potential users in the future - the following link structure works for me:
="javascript:void(window.open(' http://reporting.domain.local/reportserver/Pages/ReportViewer.aspx?%2fMainFolder%2fSubfolder%2fSubReportName&rs:Command=Render&TableNo=123&FieldNo=99&PrimaryKeyField2Value=" & Fields!ProdOrderNo.Value & "&PrimaryKeyField3Value=0&rc:Parameters=false&rc:Toolbar=false','_blank','resizeable=1,top=200,left=200,width=1600,height=600'))"
I use this address structure to open a detailed sub-report in a new small window when clicking on a value in the table in the main report. Most of the parameters are hardcoded, one is transferred from the table row value in the main report. You can also transfer any other parameters.
Where
http://reporting.domain.local/reportserver/Pages/ReportViewer.aspx?%2fMainFolder%2fSubfolder%2fSubReportName - is report path incl. folder structure
TableNo, FieldNo, PrimaryKeyField3Value - Parameters, hardcoded into the URL address
PrimaryKeyField2Value - Parameter transferred from main report
Happy reporting.