How to pull the feb'10 WT values in the month of March'10

Hi Experts,

I created a wage code for adding the amount for taxation purpose which is alreay paid outside of the salary. The amount is inputed in the wage code in Infotype 15. The last month payroll (For February'10) went correct. the amount got added into the Gross salary and tax computed accordingly.

Once again I inputed the amount in the same wage code for the month of March'10 & run the payroll. Payroll run correctly.

But when I am checking the Form 16 (Annexure page),the February,10 amunt is not getting added in the 'Other Income'.

Therefore I made the changes in the table v_512w_d --> Evaluation Class --> Gross Salary - 09 Other Allowance from 01.04.2009. When again checking the Form 16 (Annexure page), only March'10 figure is got added into the 'Other Income'.

My requirement is that how to add the Feb'10 amount in 'Other Income' as already the payroll of Feb'10 is over.

Your expert advice is required

Warm Regards

S J Rajam