When I do a forall with a sum to add 1 to each value, it works perfectly.
Set(var_hours,ForAll(CollectHours,Sum(Value,1)))
But if I do -1 to subtract, I am getting an error.
Set(var_hours,ForAll(CollectHours,Sum(Value,-1)))
I can't find if there is an actual subtract function?
How do you subtract using the forall function?