Generating Negative Value on Check Number ( Accounts Payable > Payment Journal)

Hi!

We have issue on generating cheque number on accounts payable > payment journal.  It is generating negative value on a specific offset account. See below image

1.  I fill up all required fields and click Functions > Generate payment

2. Fill up "From"  field (See no.1) - the value of this should be pass on the Check Number field (See no.2)