I'm trying to use the summation block but it does not work properly: <http://mailinglists.scilab.org/file/t497909/2019-02-19_16-53-07.gif> no matter if the port is -1 or +1 it just adds +1s! -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html