Why is the data not being updated?

Question

Angular

Hello.
Created a service that does a set when a button is clicked

import { Injectable } from '@angular/core';

@Injectable()
export class DataService {
  constructor() { }

  private data;

  setData(data) {
    this.data = data;
  }

  getData() {
    return this.data;
  }
}

in another file, when the button is pressed, the get of this service is called,
this.dataService.getData()
but for some reason the data is not updated .... as it was empty, it remains, despite the fact that if you call it from the console, then everything works fine ....

Answer 1

...
private _data: <ТИП>;

  set Data(data): void {
    this.data = data;
  }

  get Data(): <ТИП> {
    return this.data;
  }
...

Call like this:
this.dataService.data