JSON Language Injection into XML validated by JSONSchema

Hi there,

I'm trying to inject some JSON into XML properties in my plugin. I actually made this work already. Yay!

Now I want to go one step further and 

1. programatically prevent the warnings about single-quotes vs double-qoutes in the injected JSON (doesn't matter to my use case here and usually one would want to use double-qoutes as xml attribute delimiters)

2. and far more importantly: I want to validate the injected JSON using a JSON Schema

I have no clue where to start this journey... Will I have to implement my own language derived from JSON or is there a less complex solution?

Thanks and BR

Chris