Segmenting on a custom variable

Hi,
I’m trying to segment on a custom variable name (visit scope). When I enter the custom variable name, it doesn’t show up as something that can autocomplete. And also, when I manually fill in the custom variable name and apply the changes, my report says there’s “No data to report”. Is this a bug?

It should work fine, please check you selected the right SLOT and also that you typed the custom variable exactly as it is stored in DB?