2D Platform AI Jump

Hey guys, I'm making a 2.5D AI that moves by using waypoints. I already have this movement towards the waypoints. But what i want now is too make the AI jump onto a higher platform. I have been trying some stuff but every time it doesn't work out as i want it too. My code that moves the Ai at the moment is this :

 private void MoveTowardsWayPoint()
 {
     Vector3 target = wayPointList[currentWayPoint].transform.position;
     moveDirection = target - transform.position;

     float disY = target.y - transform.position.y;
     if (moveDirection.magnitude< 0.2f)
     {
         GetComponent<CPathFinding>().DFSearch();
         currentWayPoint = 1;
     }
     if (Input.GetKeyDown(KeyCode.A) && controller.isGrounded)
     {
         print("Jump");
         moveDirection.y = 12;
     }

     moveDirection.y -= 30 * Time.deltaTime;
     controller.Move(moveDirection.normalized * 5 * Time.fixedDeltaTime);
 }

But now everytime it Jumps it makes a mini jump and it still runs up to the higher platform's. And i already tried to set the moveDirection.x = target.x - transform.position.x ; but that doesn't help either cause then the movement gets fcked up. Anymore a idea how i could do this the best and cleanest.

Thx