Thanks for sharing / making it! :D
It's nice to have it as a standalone plugin.
EDIT: BUT... Unfortunately it doesn't work for me. I have the newest version of "EliMZ_SelfVariables" (2.0.0) and "EliMZ_Book" (3.2.0) + I use the newest Core of MZ (1.2.0).
I named the variables like this: "SV: Test" & "SV: 1".
The variables stays at 0, even in a new blank project.