Missing window in blend space 1d


I’m following a tutorial on unreals website to create my first ever basic “game” but I’ve come across a problem in that when the tutorial says to open a blend space 1d and goes onto change the blend parameters, my slightly newer version doesn’t seem to have that window in the same place and I cant seem to find it or even find what its called to search for a solution!

the site keeps encountering problems when I try to upload photos so…the video I was following is this one-

Any help would be wonderful…sorry for the noob question

P.S. ill keep trying to upload a print screen to show the problem