COPA error for expense value field

I have one condition type ZD01 selling expense corresponding to GL 500005, during return delivery, it is posted with 100 USD, in condition type configuration, the field plus/minus sign column is left as blank.

in billing document, it is posted with +100 USD, but in the CO-PA document, value field VV010  is posted with -100 USD, how to change it to 100 USD in configuration.

for return delivery billing, cost will be posted with minus sign, selling expense will be posted with plus sign according to accounting document, in KE4i, I already map ZD01 to VV010 and tick transfer plus and minus sign