FPS Character Controller collisions detection

Hello, I have a problem with FPS Character Controller collisions detection. I'm using this script for a Jump pad object:

using UnityEngine;
using System.Collections;

public class TriggeredJump : MonoBehaviour {

    public Rigidbody player;
    public float fForce;

    void OnTriggerEnter(Collider other)
    {   
        other.rigidbody.AddForce(Vector3.up * fForce);
        print("Collision");
        }

}

I added a rigidbody to my player Controller to apply the AddForce, but it doesn't work. For other game object it works fine, for example for a sphere I created.

Any ideas that can help me? :-) Thanks, Erhan

Try something like this:

gameObject.GetComponent<Rigidbody>().AddForce(Vector3.up * fForce);