getattribute in OSL is not giving expected results - maya

Question

I'm working on a custom OSL shader for Maya. I'm adding attributes to the shape node of objects and using getattribute() in my OSL code to manipulate those attributes. I have attributes for color correct, base color, rim width and rim color. (the last 2 are for facing ratio). My OSL always compiles and I'm always able to connect it to the material I'm using. But every time I check if it's working in the Arnold render view, my sliders on my attributes don't do anything. The goal is to have an image file connected to the base color of the material and have the color correct node affect base color (which would affect the texture file)
At first I thought my problem was I was trying to do too much in a single OSL node (I was using getattribute for all of the attributes I listed above). So I tried isolating it to just the color correct attribute and still nothing. Is anyone familiar with OSL and can help me?
This is what my OSL code is for color correct:
shader
colorCorrect
(
float modifier = 1[[float min = 0, float max = 72]],
color bob = 0,
output color result = 0
)
{
color temp = transformc("rgb", "hsv", bob);
temp[0] = temp[0] * modifier;
result = transformc("hsv", "rgb", temp);
}
This is what my OSL code is for facing ratio:
shader
Velvet(
float rim_width = 0.2
[[
string label = "Rim Width",
]],
color basecolor = color(1,1,1)
[[
string label = "Base Color",
string widget = "checkBox",
]],
color rimcolor = color(1,0,0)
[[
string label = "Rim Color",
]],
output color resultRGB = 0,
output float resultF = 0)
{
vector i = normalize(I);
vector n = normalize(N);
float d = fabs(dot(-i, n));
d = smoothstep(rim_width, 1.0, d);
getattribute("base_color", resultRGB = mix(rimcolor, basecolor, d));
getattribute("rim_width", resultF = d - 0.5);
}