Using The Color Overlay Box To Sort Additional variable, but limits to 60/128

[#1]

I have a variable with 128 samples, called Elect, and I am in graph builder and I drag that variable in the color box. However it only shows 60/128 of the varibales. Anyone hve any idea how to go on so all variables are seen. I basically have an X and Y variable already on and wanting to see a scatter plot of everything at once with the Elect variable added in the color section/box.

 

[#2]

Double click on the legend and change max items

You can also get to the same menu from Graph Builder red triangle and Legend Settings

[#3]

Hi thank you, I'm not seeing Max Items as an option, have any idea why that could be?