Originally posted by DBlanki could be wrong but I do not think you can do this because you are trying to compare a number that crystal does not have which is a distinctcount of all values before the select expert is applied.
If you include that as a column in the data source you could do it, or if you change it to doing group record selection maybe yuo can do it. Otherwise I think you have to use the 'All' in your select options.
If the parameter comes from a drop-down list which is dynamically populated, then the above solution does not work - you cannot include"All" unless it is in the data. In this case I suspect the parameter options are being coded manually, so it is possible to add "All" to the list.