Condition Type with A(Positive indicator)

Hi Experts,

I am facing the below issue pertaining to condition type.

My condition type XY00 is characterised as Price in the condition class,Plus/negative=A and condition type is B(Fixed amount)

When the value is entered against this condition type in the sale order,condition value column turns negative even when I enter positive value in the Amount column.

Please suggest what causes this and how to resolve.

Thanks,

Sara