Angular 2：BehaviorSubject / Subject在构造函数外部不起作用

Hi I need pass the data from one component to another, for this I am using the class BehavorSubject(I tried too with Subject class, but doesnt works for me). This is my code: Home page has a filter, and when is selected a filter, it called the service and it service should change a variable of homePageHi I need pass the data from one component to a