[account_voucher] when using multicurrency, amount voucher cannot be negative

[hbto [Vauxoo] http://www.vauxoo.com]

Whenever Working on multicurrency,

You cannot create a Customer/Supplier Payment with negative amounts.

Because this is capture with the following constraint:

ValidateError

Error occurred while validating the field(s) amount_currency: The amount expressed in the secondary currency must be positive when the journal item is a debit and negative when if it is a credit.

This test was done in runbot

http://7-0-23628.runbot.openerp.com/

Regards
Hbto