Could not find property 'GMS_VERSION' on org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler_Decorated@8f1726.

[saqinz]

although this entry exists in build.gradle

dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
// SUB-PROJECT DEPENDENCIES START
debugCompile project(path: "CordovaLib", configuration: "debug")
releaseCompile project(path: "CordovaLib", configuration: "release")
compile "com.google.android.gms:play-services-analytics:$GMS_VERSION"
// SUB-PROJECT DEPENDENCIES END
}
and in config.xml