Changing name size

I’m trying to change the name size on the back of these jerseys and I’ve seen posted that I need to edit the namescale value in the tweak file, but my file doesn’t have that. Any help is appreciated!

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you should be able to add a line like this
"NameVScale0": 11.0,

and possibly
"NameUScale0": 11.0,

and tweak the values to your liking