How to manipulate an Event at the angle

Question

I have this post code:

  postId(isSuccess:boolean = false){
    let obj: any = {};
    obj.card_reward = this.idCard;
    return this.http.post(`${this.PATH_REWARD}`, obj).subscribe(
      success => {if(success){
        this.postSuccess.emit(true)
      }},
      error=> console.log("deu erro"),
      ()=> ("funcionou")
    
    )
}

I defined Event that way : postSuccess = new EventEmitter <boolean>(); I wanted to know how I could manipulate this event in my other components, in case, after this value of "This.postSuccess" was true I could do something, I couldn’t find a simple way to understand