When to Start WHT
i.e until AP Inv. payments for certain supplier are less than $800 then WHT should not be applied, but once payments amount more than $800 then WHT should start creating WHT lines.
(R12 AP>setup>Tax>Codes) Amount Range scenario is not working for some reason, may be I'm doing differently.
WHT tax is working but I want this get kicked in once Invoice payments started reached (say $800) BUT not before that.