Yes, it is an input control that pops up to run the report. I created a parameter called from_date and I want it shows yesterday's date when the input control pops up. Of course I can change it to any date if I want. Here is what I did: I right click on the from_date parameter and then select "Edit", so the "Add/modify parameter" dialog box appears. Than I choose "java.util.Date" for "Parameter Class Type" and put "new Date(new Date().getTime()-1000*60*60*24)" in "Default Value Expression" section. I found that no matter what I put in the "Default Value Expression" section, even left it blank, the default pop up value is always today's date.