Move Cinemachine Spline Cart manually

Hey guys,
simple question:

  • How can I move the Cinemachine Spline Cart (in older versions Dolly Cart) manually?

Plan is to move it forward along the spine by dragging the mouse down and vice versa!

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MoveCartWithMouse : MonoBehaviour
{
    public float speed = 1.0f;
    // Update is called once per frame
    private void Update() {
        transform.Translate(Input.mouseScrollDelta.y * speed * transform.forward);
    }
}

Above script does not do the trick :-/

Appreciate any help

That won’t work? I remember doing that on DollyCart

public class MoveCart : MonoBehaviour
{
    public CinemachineDollyCart dollyCart;
    public float cartPosition;

    void Update()
    {
        dollyCart.m_Position += cartPosition;
    }
}