VerticalBox has no variable in Graph

In the following tutorial: I found that one part of it which says “Hold Ctrl and drag in the MainMenu and OptionsMenu variables” is referring to the VerticalBox’s that were created previously however they do not show up as variables in the Graph. Another person Blueprint Graph Variable not showing - Blueprint - Unreal Engine Forums using 4.9 (the version of the tutorial) also came to this conclusion. Is there a fix?