Move an object along the z axis by touchpad.

Hey,
I have written a script to pick an object with a rigidbody component by the ray casted from the controller and move it around. 
I make the object, the child of the controller to move it in the scene then. I already have a script to detect the object by the ray casted from a controller, picking it up and moving it up and down and left and right with the controller. 

Now , I want to make that selected object along the z-axis by using the touchpad of oculus go. However I am not sure how to do it.

This is the function i am using it to attach to the parent:

public virtual void Store(Transform NewParent)
{
//The following stops the object being effected by physics while it's in the players hand
rb.isKinematic = true;
//And fixes it to the new parent it is given by the player script to follow.
transform.parent = NewParent;
//It then resets it's position and rotation to match it's new parent object
//transform.localRotation = Quaternion.identity;
//transform.localPosition = Vector3.zero;
}

and then i use it in the pointer class to attach it to the ray.

void Intract()
{
//We set up the input "OculusPrimaryIndexTrigger" in the Input manager
if (OVRInput.GetDown(OVRInput.Button.PrimaryIndexTrigger))
{
selectVisual.ClearObject();
//Check if you are holding something you can throw first
if (inHand != null)
{
inHand.Release(controllerRef.forward, throwForce);
inHand = null;
//We do this check here to prevent Errors if you have nothing selected
}
else if (selectedObject != null)
{
//Check if you can pick up the selected object second
if (selectedObject.GetComponent<PickUp>())
{
//Beacuse PickUp is a child of PropBase, we can ask InHand to store selectedObject as PickUp, rather than use GetComponent
inHand = selectedObject as PickUp;
inHand.Store(holdingRef);
//If non of the above were valid then simple call the trigger function of the selected object
}
else
{
selectedObject.Trigger();
}
}
//If you have a object that you need to hold down a button to intract with
}
else if (pointerOver != null)
{
if (pointerOver.GetComponent<PropBase>())
{
selectedObject = pointerOver.GetComponent<PropBase>();
}
else
{
selectedObject = null;
}
}
else
{
selectedObject = null;
}

}

}

If anyone could point me in a right direction or help me with this, I would greatly appreciate it!

Thanks in advance.