143.1559.1: in gradle subprojects don't understand properties declared in parent

Hi All,

This is my build.gradle of the parent

allprojects {
    group = "com.baml"

    apply plugin: "java"               // need this plugin to declare source/target compatibility
    sourceCompatibility = 1.8
    targetCompatibility = 1.8

    repositories {
        mavenLocal()
        // For my own reason, there's no maven repository here :-) You need to download the libraries yourself.
    }

    ext {
        logbackVersion = "1.1.3"
        slf4jVersion = "1.7.13"
        jettyVersion = "9.3.1.v20150714"
        httpComponentsVersion = "4.5.1"
        snakeyamlVersion = "1.16"
    }

    dependencies {
        compile "org.slf4j:slf4j-api:$slf4jVersion"
        compile "ch.qos.logback:logback-classic:$logbackVersion"
        compile "ch.qos.logback:logback-access:$logbackVersion"
        testCompile "junit:junit:4.12"
    }
}

This is for the sub project

version = "0.1-SNAPSHOT"

dependencies {
    compile "org.apache.httpcomponents:httpclient:$httpComponentsVersion"
    compile "org.yaml:snakeyaml:$snakeyamlVersion"
}

Idea said "Cannot resolve symbol 'httpComponentsVersion'" when I pointed the mouse to it.