Help for filter mesure

Hello everyone,

I need some help please.

I have one mesure like this  :

Calcul FAE = (SUM('asa t_rowind (Indicateurs)'[totRevP]) - SUM('asa t_Rowcin (Ligne de factures)'[totRev]))+ SUM('asa t_rowchg'[totOsa])

I have positive and negative results. On my dashboard, i need to put a filter to show only positive or negative results. How do this ? Thank you very much for your time.

Charly