diff --git a/starter_code/elevator.js b/starter_code/elevator.js
index 5339f35..301c8c4 100644
--- a/starter_code/elevator.js
+++ b/starter_code/elevator.js
@@ -1,19 +1,68 @@
 class Elevator {
-  constructor(){
-    this.floor      = 0;
-    this.MAXFLOOR   = 10;
-    this.requests   = [];
-  }
-
-  start() { }
-  stop() { }
-  update() { }
-  _passengersEnter() { }
-  _passengersLeave() { }
-  floorUp() { }
-  floorDown() { }
-  call() { }
-  log() { }
+  constructor() {
+    this.floor = 0;
+    this.MAXFLOOR = 10;
+    this.requests = [];
+    this.direction = "";
+  }
+
+  start() {
+    var intervalID = setInterval(update, 1000);
+  }
+
+  stop() {
+    clearInterval(intervalID);
+  }
+  update() {
+
+    this.log();
+  }
+  _passengersEnter() {}
+  _passengersLeave() {}
+  floorUp() {
+    if (this.floor < this.MAXFLOOR) {
+      this.floor += 1;
+      this.direction = "UP";
+    }
+    return this.floor;
+
+  }
+  floorDown() {
+    if (this.floor > 0) {
+      this.floor -= 1;
+      this.direction = "DOWN";
+    }
+    return this.floor;
+  }
+  call(person) {
+    this.requests.push(person);
+  }
+  log() {
+    console.log("Direction : " + this.direction + "| floor: " + this.floor);
+  }
 }
 
 module.exports = Elevator;
+
+lift = new Elevator; //create a object;
+for (let i = 0; i < lift.MAXFLOOR + 1; i++) {
+  lift.floorUp();
+
+  lift.update();
+}
+for (let i = lift.MAXFLOOR; i > -2; i--) {
+  lift.floorDown();
+  lift.update();
+}
+// for(let i = 0; i > lift.floor ;)
+
+class Person {
+  constructor(name, originFloor, destFloor)
+  this.name = name;
+  this.originFloor = originFloor;
+  this.destFloor = destFloor;
+
+}
+
+tom = new Person;
+lift.call(tom);