I think you can only add one item at a time so in your case it would be
ArrayName.Add(8);
ArrayName.Add(-8);
ArrayName.Add(1)
ArrayName.Add(-1)
I think you can only add one item at a time so in your case it would be
ArrayName.Add(8);
ArrayName.Add(-8);
ArrayName.Add(1)
ArrayName.Add(-1)