Create build config string field in android library?

I want to to have a string version in build config for my library module

I am using the below code

android {
ext{
    version = 'NW-1.1.6'
    name = 'Network'
}
defaultConfig {
    buildConfigField "String", "LIBRARY_VERSION","${version}"
}

But in my build config I see it as

public static final String LIBRARY_VERSION = NW-1.1.6;

instead of

public static final String LIBRARY_VERSION = "NW-1.1.6";

What is wrong with the above code

>Solution :

Just use the following

defaultConfig {
    buildConfigField "String", "LIBRARY_VERSION","\"${version}\""
}

this will produces the string you need:

public static final String LIBRARY_VERSION = "NW-1.1.6";