MVC

Question

I have a project in payroll, i am creating Salary structure for an emplyee, in salary i have the deductions as well eg:PF, i need add another deduction field, i have  added the field even but i am unable to pull the value from the master for the newly added filed FD,
SAVE    CANCEL
SALARY STRUCTURE
BASIC
EMPLOYEE CODE:PK
EMPLOYEE NAME
BASIC PAY:5000
EFFECTIVE MONTH
EFFECTIVE DATE
PAYMENT MODE
PAY SCALE:5000-15000
REMARK
Description
ALLOWANCES
DA
HRA
CONVEYANCE
CLA
OTHER
TRAVEL
DEDUCTIONS
OTHER
ESIC
PF:12%
PLT
LIC
GLIC
PT
RD
IT
FD :/// this value should come from the master i.e 10%
TOTAL
GROSS SALARY :5000 TOTAL DEDUCTION :12 NET PAY 4987
If you colud help that would be appreciated, this project is in mvc 4,
Thanks
Rizwan