Please find attached workbook,
I have created a parameter and applied a filter.
The report will show blank unless and until you enter any value.
eg. Select category is showing blank. when you type Furniture it will show the report.
In second report I used filter.
It will show all the values by default but if you enter any segment the report will filter as per selection
Eg Consumer + Corporate
Hope this will give you some idea to get it done.
Also If this is not as per your requirement give me some additional information like sample data, screen shots.
Filtered.twbx 451.3 KB