How do I create a parameter to ask the user to input a "Date range" that corresponds with the two date ranges used in my report?

I am using iReport and writing reports to use with Fishbowl manufacturing database application.

 I've written my report and i uploaded it to FB and it does nothing. The reason, I figured out, is because I dont know how to set parameters. I'm using a report someone else did to reference and learn from; and they have it towhere the user (inside the FB application) is prompted to enter a "Date Range"

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This is a picture of what it looks like in FB.

I will gladly explain more. If anyone could offer any advice or references; I would greatly appreciate it!

Thank you guys!

-Colt