Transaction date should only be the date selected in the parameter

In my SSRS report I want to display the data of selected date only. How do I set my Transadate parameter so that it will display only the selected date data.

Reports columns are : Tranasaction date, Cust_First Name, Cust_Last Name, payment_amt etc.

Report parameter : Transaction_date (date/time) calender

For examaple: There are some data on different dates like 4/16/2013, 4/22/2013, 4/29/2013, 5/02/2013,5/04/2013, 5/07/2013 and if I choose 5/02/2013 from my Trans_Date Parameter then in report it should only shows the data of the  transaction date 5/02/2013, while the rest of date should not be displayed.

Please help ASAP.