id correction on tiles

frontend/src/components/Tile.vue

 <template>
   <div class="tile">
-    <button class="tile-symbol" :id="this.id">
+    <button class="tile-symbol" :id="this.tile.idobject">
       <img class="tile-background" :src="this.background" :width="this.width" :height="this.height"/>
       <img class="tile-front" :src="this.svg" :width="this.width" :height="this.height"/>
     </button>
@@ -28,7 +28,6 @@ export default {
     this.tile = new Tile(this.id);
     this.background = require("@/assets/img/mahjong-tiles/Black/Front.svg");
     this.svg = require("@/assets/img/mahjong-tiles/Black/"+ this.tile.getSVG());
-    this.id = this.tile.idobject;
     console.log(this.svg);
   }
 }