There are two Active Choices Reactive Parameters here that called channel and include_arm32, include_arm32 needs channel. When we save the configuration and back to the job page, then click Build with Parameters menu, there is a loading in the front of the channel field checkbox. At this time, if you switch to the Console tab of the chrome browser, you'll find some error messagess about UnoChoice.js in it. The screenshots image and job files is as blow: