Approval groups - document total value gross or net

Hi,

while setting up the Approval groups for Requisition approval and the approval rule "Document Total"

whether the "Amount Limit" entered is a Gross value (including Tax/VAT) or Net value (excluding Tax/VAT)?

i.e. an approver has approval limit setup as 1000 then can he approve a requisition for 1000 with VAT i.e. gross total would be 1200 (1000+20%VAT).

Rgds,

-Kamal