How to limit spell-check to a specific scope?

I need to make it so spell-check package only works with the following scope.

string.quoted.double.single-line.python.renpy

When the language is set to Ren’py. If I add source.renpy to the grammars of spell-check, the spell check works, but checks all the code too, which I don’t want.

I’d like to restrict the spell-check to only work within this scope, which is the quotes in the code:

string.quoted.double.single-line.python.renpy

I tried adding string.quoted.double.single-line.python.renpy to the grammars, but the spell check didn’t work.

I wonder if I’m supposed to combine them or something?

source.renpy:string.quoted.double.single-line.python.renpy

Like that?