@lovelovevideo ok, so maybe this is way basic and obvious, but... i've had a similar problem and decided to use [colorRGB] to manipulate "opacity":
Below is just an example. Essentially you want to choose an integer range between 0 and whatever positive integer (the alpha inlet of [colorRGB] uses values between 0 and positive 1). Your input has to be within this range (e.g. 25, 10, 5, etc.). Then divide the input by the range (50) and thus you will yield a float (decimal value) between 0 and 1. The resultant float (decimal) values will be "spaced" out in the same increments as your integer range (i.e. input 5/50 = .1, 10/50 = .2, 15/50 = .3, etc).
I hope this helps and isn't more confusing or besides the point!