Typesafe config: write / create reference

Question

What I want to do is quite straight forward. I want to create a config object in my code and some of the values should be references. I then want to save that config to a file and later, when reading it, the references will be substituted with the correct value. I use lightbends typesafe config library and the scala wrapper pureconfig (but don't mind about pureconfig)

Now to read and substitute values correctly the config needs to look something like this:

"name" {
    "someNormalValue" : "v"
    "subsitute" : ${substitute-value}        
}

The question is, how can I actually generate such a config using the mentioned library.

Ps. I'm looking for a nicer solution than just rendering the config and going back to 'manually' remove the double quotes around ${substitute-value}

Thanks for you responses!