Hi we run std 2008 r2. I'm looking right at and running a master and sub report from Visual Studio. When I rt click the sub report area of the designer pane in the master and choose properties->parameters, I see paired values of name and value. The entries in the name column match some dataset field names in the master and param values in the sub. The values just seem to be the same with brackets. I don't see any reference to a dataset name in the master for this parameter passing linkage. When the report runs definitely multiple values are passed to the sub .
How does ssrs know these are coming from a dataset? I would have thought ssrs can source this kind of thing from other objects as well (not just datasets) and there would be some reference somewhere to tell ssrs telling it where these values are coming from (eg dataset, master params, built in fields etc).