Try downloading the plugin source and changing State to Value and saving the plugin on your computer
Doesn’t work with Fusion 0.2 
I’m sorry, but you are obviously not an experienced UI designer.
The Roblox UI editor is simply terrible. The bugs alone make it unbearable to work with. Coding UI with Roact and Fusion is simply more efficient and better in the long run. For most experienced UI designers, the UI editor is subpar to say the least.