11 - Invalid key!

If key is Invalid in set.

set $windowName (window):
"Title": "TitleText",
"Size": "1000x800",
;

show $windowName;

/!\ BH#1#11 - DevCode -> 0 | Path 'C:\Users\GROOPHY\Desktop\umstest.txt | Builder/Build.cs | 141'
|!| Invalid key! this might be what you're looking for: 'Name'.
|!| Ln: '5' | ChLn: '5-6' | Ch: '"' | Time: 19:24:34
\!/ "Size"="1000x800"

Fix method:

//Wrong
"Size"="1000x800" 

//right
"Width"="1000",
"Height"="800"