3rd person camera can't rotate around character

Unity Engine
1

Hello people im trying to create a third person camera that follows the character and rotates around the character if you rotate your mouse but for some reason it only rotates the Y axis but not the X axis (so i can rotate above and under the player) am i doing something wrong in the code or is this a unity project settings issue??

using UnityEngine;
using System.Collections;

public class ThirdPersonCamera : MonoBehaviour {

    public bool lockCursor;
    public float mouseSensitivity = 7;
    public Transform target;
    public float dstFromTarget = 7;
    public Vector2 pitchMinMax = new Vector2 (-40, 85);

    public float rotationSmoothTime = .12f;
    Vector3 rotationSmoothVelocity;
    Vector3 currentRotation;

    float yaw;
    float pitch;

    void Start() {
        if (lockCursor) {
            Cursor.lockState = CursorLockMode.Locked;
            Cursor.visible = false;
        }
    }

    void LateUpdate () {
        yaw += Input.GetAxis ("Mouse X") * mouseSensitivity;
        pitch -= Input.GetAxis ("Mouse Y") * mouseSensitivity;
        pitch = Mathf.Clamp (pitch, pitchMinMax.x, pitchMinMax.y);

        currentRotation = Vector3.SmoothDamp (currentRotation, new Vector3 (pitch, yaw), ref rotationSmoothVelocity, rotationSmoothTime);
        transform.eulerAngles = currentRotation;

        transform.position = target.position - transform.forward * dstFromTarget;

    }

}
2

I pasted your code just to check it out, because I thought it looked okay. It works perfectly for me.