If your CSV file contains a column that specifies the type of the amount (Debit/Credit) you can map that column as: Type.

The amount will be generally a positive number. During the process of conversion, the Type will be used to specify if the number is negative.

Example

num,currency,date,credit/debit,amount,payee

"0102046998","EUR",20120801,"C",174.93,"EMYOA B.V."