Input a journal to adjust base currency amount manually in AX?

Hi,

Can I manually input a journal with zero amount in original currency and adjust amount in base currency? How to do this?

e.g.

Currency Amount Base Amount

Dr Bank Account USD 0 620

Cr Un-realized Exchange Gain/Loss USD 0 620

Regards,

Leo Tse

This is not possible in AX as you cannot post Journals with Zero Values.