How to suppress Details value if it is duplicated

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CrystalReports

Hi Friends,


I retrieved values from database. Values will look like this

Cover ID Bank Fromdate Todate BuyCCy BuyAmount Sellccy sellamt assignid
FC11-1 ND 27/12/2011 27/12/2011 INR 700000 USD 200000 CS12-11
FC11-2 ND 27/12/2011 27/12/2011 USD 700000 INR 200000 CS12-12
FC11-2 ND 27/12/2011 27/12/2011 USD 700000 INR 200000 CS12-13
FC11-6 SBI 06/03/2012 06/03/2012 INR 700000 USD 200000 CS12-13

In above example i have to suppress duplicate values upto sellamt. from assignid all values should be there. I gave suppress if duplicated checkbox as selected. But it suppressing entire row or column(if values are repeated) I want to display output like this.

Cover ID Bank Fromdate Todate BuyCCy BuyAmount Sellccy sellamt assignid
FC11-1 ND 27/12/2011 27/12/2011 INR 700000 USD 200000 CS12-11
FC11-2 ND 27/12/2011 27/12/2011 USD 700000 INR 200000 CS12-12
CS12-13
FC11-6 SBI 06/03/2012 06/03/2012 INR 700000 USD 200000 CS12-13

if anybody know this please help me.

Thanks in advance