Add the lookup tables so you can select from a list of values
1.Right click on sqlDataSource1 from Report Explorer
2.Select Manage Queries
3.Click Add on Manager Queries
4.Click Run Query Builder from Query Editor form
5.Select Tbl_LOOKUPVALUE_PaymentType
6.Click the LOOKUPVALUE1 field
7.Enter an Alias e.g. Payment Type, Click OK