When I add tax to journal entry line a journal entry line for tax is added automatically. If I add another line with the same tax value, that value is added to the already created journal entry line but I don't want that.. I want new line to be created for the other line...

For example:

- Add new line with Account account_100, Tax=10% and credit=100 euro 

=> a new line is created with Account vat_account and credit=10 euro

- Add another line with Account account_200, Tax=10% and credit=100 euro

=> 10 euro is added to the already created line and credit becomes 20 euro...

-> I want another separated line to be created with 10 euro and same Account vat_account..

Is that possible? Can anyone help me?