If you save the attribute every time it works fine :
https://www.loom.com/share/55036c50ff8b4419a2b67f4bb0a6388d

But if you delete one of the attributes and add the attribute again, skipping the save attribute is causing the issue mentioned on the next video :
https://www.youtube.com/watch?v=FqC_wecfVQs&feature=youtu.be