plot is not reactive

[netchose]

Hi,

I modified the example that you gave by adding a button and a method like this:
i can see the props change in vue dev tool but nothing happen on the screen

thakks a lot
  ```
<button @click = "dochange"> dochange </ button>

  methods: {

     dochange() {

       this.layout.plotBackground = "# 000000";
       this.data [0] .y = [5,6,7,8];
       this.data [0] .marker.color = '# faae00';
     }