sap security valuation

Hi,

Please guide me in the following issue

At the time of selling the Fixed Interest Bonds (i was configured as a  manual assignment), i want to select the Price % instead of Rupees and others.

Example:

We have 100 fixed interest bonds with different price %  and equal amounts(INR 10 Crores)

I want to select particular Price % to sale the fixed interest bonds.

with regards

raju