Library function logistic not found when using fit

I'm trying to fit a logistic function to my data:

x = 20:10:80;
y = [0, 0.0625, 0.5882, 0.8235, 0.9375, 1, 1];

According to the mathworks documentation (here and here), the fit function should be able to take 'logistic' as the model name. But when I run the function, I get this error

fitObj = fit(x',y', 'logistic');

Error using fittype>iCreateFromLibrary

Library function logistic not found.

I'm using Matlab 2023a, unless this has been updated in 2023b can somebody help me figure out what's going wrong please

Answer 1

[Thomas]

Ok so turns out this was updated in 2023b...

[Star Strider]

If it’s not available, see List of Library Models for Curve and Surface Fitting to create it yourself.