Incorrect Housing Interest figure in the payslip and custom report issue(indian Payroll)

Dear Experts,

In the payslip the housing interest figure is incorrect.How do I resolve this issue?

Also the client Indian payroll and has a custom loan report .After executing the report we should get Housing Installment and Housing Interest.But after executing the report both Housing Installment and Housing Interest are not getting populated in the report.Where could be the solution for this.

Regards

Thanks in Advance