I don’t know if i read your code wrong, but it seems, that you just add 1 to the “Max Glowstick” float variable and not the Glowstick Amount.
Furthermore you are clamping the value of the “Glowstick Amount” float variable to Min: 1 and Max: 1, which means that the “Glowstick Amount” variable can only be 1.
You should connect glowstick amount to the “Increase Amount” input inside the function, and clamp the value to the preferred min and for max you would use your “Max Glowstick” float variable (Which you need to set to a Value for it to make sense of).
Hope it helps!