The subtraction operator-FR Account Schedule

ALTHON

hi,
I want to do the subtraction of two lines of my FR Account Schedule tables ,the number of lines are as follows: IV and V, I like to make the subtraction of the two lines:
IV= -842965,82
V= 5900165,39
Resualt OF IV-V must be:-6743131,21
So in the fields "Totaling " I put IV-V but the system does not display any results!!!!
I do not understand how I should do a subtraction and addition
thinks

ALTHON

hi,

THATS HOW I SET UP my FR Account Schedule,(see the pictures)
the amount are displayed correctly but the last ligne "Results" do not display the resulat of substraction

thinks