How to use folder properties?

[ZillaYT]

I have the folder properties plugin installed, and have defined some folder properties, e.g., key=PROJECT_NAME, value=foo. How do I use this in my jobs that belong in the folder? I tried env.PROJECT_NAME but it doesn't find it. Thanks!

[ZillaYT]

I wanted to clarify that I created a folder, and then jobs inside the folder. I then configured the folder to have properties (e.g., PROJECT_NAME) that I'm trying to use in the jobs inside the folder.

[ZillaYT]

RTFM: https://wiki.jenkins.io/display/JENKINS/Folder+Properties+Plugin

Had to use in my Jenkinsfile

withFolderProperties {
    projectName = env.PROJECT_NAME
}