Create Crystal Reports based on Drop Down List Selection

Question

Hello Guys,

 

                 I am working on something there i want to generate crystal reports for selected item in Drop down list.

Here In drop down list i have pg names and i want generate report like Pg Rents and Pg Expenses and total of pg rents and total of expenses and finally i want to show the profit/Loss for all these i have all tables like pg names, pg rooms,pg joinees, pg rents etc. please can any one tell me how to generate?? 

 

 

Thanks