Hmmm. I've just found that while adding all the values to the default list works fine when viewing the report from within the development studio when I deploy the report and view it on our intranet no defaults are set. Seems to make being able to set this when defining the report a bit pointless - perhaps I'm doing something wrong.

I've found an alternate means of achieving this though which is good enough for me as I don't have that many reports (yet, I guess). It's possible to open the report properties tab on the deployed version of the report and then select Parameters from the list of links on the left. I can then tick the default values for the deployed report here - it will even let me simply tick the Select All option of the list.

Best of all is that it looks so far like these defaults are retained for subsequent deployments of the report so this doesn't need to be reset if the report is tweaked.

John