FF6Tools - Browser-Based ROM Editor

[fw4210]

• Search for "worldGraphics2" and change its "range" to "0xEF7D07-0xEF9D17"
  
• Search for "worldLayout2" and change its "range" to "0xEF4A46-0xEF7D07"
  

A more detailed guide on how to fix this would be appreciated. I go back and forth between USme & FF6tools and am afflicted with this.

What I have done is: I opened the json file, plugged in the numbers in those specific points, saved the json file.

Load up the ROM in ff6Tools from the same folder with the json file and……… nothing. It's not applying. What obvious step(s) am I missing?