URGENT..How to Run Cash Flow Report.

How do I run the cashflow report. I opened the cash flow report by going in t.code S_ALR_87012272. I entered the co. code and the g/l accounts, and the fiscal year and executed the report. But it opened a screen with no records found, although the g/l accounts have balances. Why are they not getting picked up. Is there a special way to run the cash flows report. Is it different from Financial Statement version. It is very urgent, so if I can get some help, I will greatly appreciate it.

Thanks

Lakshmi