BIg, Big trouble...

[beamends <..hidden..>]

I'm trying enter a payment to a supplier. Using the AP screen I'm
entering the supplier name from the drop down list, and the VAT box is
ticked. I fill in the total and post. It is just a payment to them, not
for a specific invoice. The transaction then appears in the Transactions
report with the entire total in the tax field, and doing a Tax Paid
report show no record of the transaction. What am I doing wrong?

Richard