Withholding tax for rent

Dear Experts,

As per my client, I have configured withholding tax for Rent Slabs and also maintain entries in the formula for that however system is not calculating withholding tax.

Note:

Company Code Currency is USD

Country is Pakistan

WHT slabs is maintained in PKR and as well in USD separately with different WHT Codes against single WHT Type, on USD it calculates WHT however in the PKR system not calculating WHT amount.

Please advise.

Regards,

AB