Hi Umar
You can try maintaining the Total Entitlement AMT in IT 0014 for the entire Fiscal Year and then reimbursement AMT in IT 0267.
During the offcycle you can read both IT 0014/0267 and then subtract the AMT from the total entitlement and store the remaining entitlement in RT. Every month read the LRT of the entitlement WT and store in RT for future processing.
Cheers
JayK